======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '333'
                                          'artist'  'Tom Waits'
                                     'text_people'  ''
                                         'release'  'Mule Variations'
                                           'title'  'Hold On'
                                           'quals'  ("['Q-JZFKS-2', 'Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-2', 'Q-OLDST-3', "
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                                      'lastfmtags'  "['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']"
                                     'discogstags'  "['jazz', 'rock', 'blues', 'blues rock', 'contemporary jazz', 'folk']"
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                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '16'
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-folk'
                                             'bpm'  '148'
                                             'key'  '10B'
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rest: ''

======================== rawer (from filesystem) ========================

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Mule Variations'
'TBPM' (BPM (beats per minute))                     '148'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-folk'
'TDOR' (Original release time)                      '1999'
'TDRC' (Recording time)                             '1999-04-27'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['mix', 'Oz Fritz'], ['mix', 'Jacquire King'], ['producer', 'Kathleen Brennan'], ['producer', 'Tom Waits']])
'TIT2' (Title/songname/content description)         'Hold On'
'TKEY' (Initial key)                                '10B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Tom Waits'
'TPE2' (Band/orchestra/accompaniment)               'Tom Waits'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Anti-'
'TRCK' (Track number/Position in set)               '3/16'
'TSO2'                                              'Waits, Tom'
'TSOP' (Performer sort order)                       'Waits, Tom'
'TXXX:ASIN'                                         'B00000IGGA'
'TXXX:Acoustid Id'                                  '94e3fa39-f851-473c-8a36-d4fdee9fe083'
'TXXX:Artists'                                      'Tom Waits'
'TXXX:BARCODE'                                      '045778654727'
'TXXX:CATALOGNUMBER'                                '86547-2'
'TXXX:MusicBrainz Album Artist Id'                  'c3aeb863-7b26-4388-94e8-5a240f2be21b'
'TXXX:MusicBrainz Album Id'                         '72463bb5-a409-34f3-9de0-696fea05c34f'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'c3aeb863-7b26-4388-94e8-5a240f2be21b'
'TXXX:MusicBrainz Release Group Id'                 'be821a7a-4a19-3062-9ca6-8d07a658bc10'
'TXXX:MusicBrainz Release Track Id'                 '4a0ef225-8710-399f-bf86-89380208249d'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['jazz', 'rock', 'blues', 'blues rock', 'contemporary jazz', 'folk']
'TXXX:lastfmtags'                                   ['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']
'TXXX:originalyear'                                 '1999'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.10 dB'
'TXXX:replaygain_track_peak'                        '0.524510'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'1516758a-a5ec-44a4-abb9-00c192fdffd3')
'USLT::XXX'                                         ('They hung a sign up in our town\n'
 '"if you live it up, you won\'t\n'
 'Live it down"\n'
 'So, she left Monte Rio, son\n'
 'Just like a bullet leaves a gun\n'
 'With charcoal eyes and Monroe hips\n'
 'She went and took that California trip\n'
 'The moon was gold, \n'
 'Her hair like wind\n'
 "She said: don't look back just come on Jim\n"
 '(Chorus)\n'
 'Oh you got to \n'
 'Hold on, Hold on\n'
 'You got to hold on\n'
 "Take my hand, I'm standing right here\n"
 'You gotta hold on\n'
 '\n'
 'Well, he gave her a dimestore watch\n'
 'And a ring made from a spoon\n'
 'Everyone is looking for someone to blame\n'
 'But you share my bed, you share my name\n'
 'Well, go ahead and call the cops\n'
 "You don't meet nice girls in coffee shops\n"
 'She said baby, I still love you\n'
 "Sometimes there's nothin left to do\n"
 '\n'
 'Oh you got to \n'
 'Hold on, hold on\n'
 'You got to hold on\n'
 "Take my hand, I'm standing right here,\n"
 'You got to hold on.\n'
 '\n'
 'Well, God bless your crooked little heart \n'
 'St. Louis got the best of me\n'
 'I miss your broken-china voice\n'
 'How I wish you were still here with me\n'
 '\n'
 'Well, you build it up, you wreck it down\n'
 'You burn your mansion to the ground\n'
 "When there's nothing left to keep you here, when\n"
 "You're falling behind in this\n"
 'Big blue world\n'
 '\n'
 'Oh you go to\n'
 'Hold on, hold on\n'
 'You got to hold on\n'
 "Take my hand, I'm standing right here\n"
 'You got to hold on\n'
 '\n'
 'Down by the Riverside motel,\n'
 "It's 10 below and falling\n"
 'By a 99 cent store she closed her eyes\n'
 'And started swaying \n'
 "But it's so hard to dance that way\n"
 "When it's cold and there's no music\n"
 'Well your old hometown is so far away\n'
 "But, inside your head there's a record\n"
 "That's playing, a song called\n"
 '\n'
 '"Hold on", hold on\n'
 'Baby got to hold on\n'
 "Take my hand, I'm standing right here\n"
 'You gotta hold on')

========================== row from database ==========================
                                              'id'  1247511
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Waits, Tom - Tom Waits/Mule Variations/Tom Waits - Hold on - 03.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  333
                                           'genre'  ifs-songwriter-folk
                                        'filesize'  5414552
                                           'mtime'  1639508266
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos Waits, 03 ifs songwriter folk
                                      'tag_artist'  Tom Waits
                                     'tag_release'  Mule Variations
                                       'tag_title'  Hold On
                                             'bpm'  148.0
                                    'search_title'  'hold':1 'on':2
                                   'search_artist'  'tom':1 'waits':2
                                  'search_release'  'mule':1 'variations':2
                                     'search_rest'  '00singer':1 'eos':3 'folk':7 'ifs':6 'songwriter':2 'waits':4,5
                                    'search_combo'  '00singer':7 'eos':9 'folk':13 'hold':1A 'ifs':12 'mule':5C 'on':2A 'songwriter':8 'tom':3B 'variations':6C 'waits':4B,10,11
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']
                                        'tag_date'  1999
                                     'discogstags'  ['jazz', 'rock', 'blues', 'blues rock', 'contemporary jazz', 'folk']

============================== file details ==============================
                                           'mtime'  1639508265.8896158  (2021-12-14 19:57:45)
                             'size'  5414552