======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '145'
                                          'artist'  'The Mountain Goats'
                                     'text_people'  ''
                                         'release'  'Bitter Melon Farm'
                                           'title'  'Song for an Old Friend'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'acoustic', 'lo fi', 'folk', 'pxs: loved']"
                                     'discogstags'  "['rock', 'folk, world, & country', 'alternative rock', 'lo-fi', 'indie rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '21'
                                      'tracktotal'  '27'
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie'
                                             'bpm'  '104'
                                             'key'  '10B'
                                        'acoustid'  '72c0892a-64a1-4f6a-aeac-dbc41e1908e3'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Bitter Melon Farm'
'TBPM' (BPM (beats per minute))                     '104'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie'
'TDOR' (Original release time)                      '2002'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Song for an Old Friend'
'TKEY' (Initial key)                                '10B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Mountain Goats'
'TPE2' (Band/orchestra/accompaniment)               'The Mountain Goats'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  '3 Beads of Sweat'
'TRCK' (Track number/Position in set)               '21/27'
'TSO2'                                              'Mountain Goats, The'
'TSOP' (Performer sort order)                       'Mountain Goats, The'
'TXXX:ASIN'                                         'B000065DVF'
'TXXX:Acoustid Id'                                  '72c0892a-64a1-4f6a-aeac-dbc41e1908e3'
'TXXX:Artists'                                      'The Mountain Goats'
'TXXX:BARCODE'                                      '791071100224'
'TXXX:CATALOGNUMBER'                                '3BOS 1002.2'
'TXXX:Mp3gain_minmax'                               '103,207'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'TXXX:MusicBrainz Album Artist Id'                  '9639cd52-c351-4a17-9797-58880e95a7ef'
'TXXX:MusicBrainz Album Id'                         '19c751e5-5d2f-4afd-aeee-d1ac093c8b77'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '9639cd52-c351-4a17-9797-58880e95a7ef'
'TXXX:MusicBrainz Release Group Id'                 '09b61f6f-e42c-3c60-a5dd-66095caa6269'
'TXXX:MusicBrainz Release Track Id'                 '286bdfab-40c4-328e-9319-754200f864f7'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'folk, world, & country', 'alternative rock', 'lo-fi', 'indie rock']
'TXXX:lastfmtags'                                   ['indie', 'acoustic', 'lo fi', 'folk', 'pxs: loved']
'TXXX:originalyear'                                 '2002'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.11 dB'
'TXXX:replaygain_track_peak'                        '0.584903'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'373e3ba3-47a3-4336-b573-e76eb800b7ee')

========================== row from database ==========================
                                              'id'  1317869
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Mountain Goats/Bitter Melon Farm/21 song for an old friend.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  145
                                           'genre'  ifs-songwriter-indie
                                        'filesize'  3532859
                                           'mtime'  1636400577
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 21 song old friend ifs songwriter indie
                                      'tag_artist'  The Mountain Goats
                                     'tag_release'  Bitter Melon Farm
                                       'tag_title'  Song for an Old Friend
                                             'bpm'  104.0
                                    'search_title'  'an':3 'for':2 'friend':5 'old':4 'song':1
                                   'search_artist'  'goats':3 'mountain':2 'the':1
                                  'search_release'  'bitter':1 'farm':3 'melon':2
                                     'search_rest'  '00poprockelectronic':1 '21':2 'friend':5 'ifs':6 'indie':8 'old':4 'song':3 'songwriter':7
                                    'search_combo'  '00poprockelectronic':12 '21':13 'an':3A 'bitter':9C 'farm':11C 'for':2A 'friend':5A,16 'goats':8B 'ifs':17 'indie':19 'melon':10C 'mountain':7B 'old':4A,15 'song':1A,14 'songwriter':18 'the':6B
                                    'tag_tracknum'  21
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'acoustic', 'lo fi', 'folk', 'pxs: loved']
                                        'tag_date'  2002
                                     'discogstags'  ['rock', 'folk, world, & country', 'alternative rock', 'lo-fi', 'indie rock']

============================== file details ==============================
                                           'mtime'  1636400576.8890178  (2021-11-08 20:42:56)
                             'size'  3532859