======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '163'
                                          'artist'  'Red Elvises'
                                     'text_people'  'Chuck Berry'
                                         'release'  'Surfing in Siberia'
                                           'title'  "Rock n' Roll Music"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
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 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['surf', 'surf rock', 'psychobilly', 'rockabilly', 'rock', 'russian']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  '13'
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'rock-pop-surf;loc-russia'
                                             'bpm'  '112.321'
                                             'key'  '9A'
                                        'acoustid'  '3d8780ff-6048-446d-b0c0-5d9a6d27d940'
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Surfing in Siberia'
'TBPM' (BPM (beats per minute))                     '112.321'
'TCOM' (Composer)                                   'Chuck Berry'
'TCON' (Content type, a.k.a. Genre)                 ['rock-pop-surf', 'loc-russia']
'TDOR' (Original release time)                      '1997'
'TDRC' (Recording time)                             '1997-09-29'
'TIT2' (Title/songname/content description)         "Rock n' Roll Music"
'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Red Elvises'
'TPE2' (Band/orchestra/accompaniment)               'Red Elvises'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Shooba-Doobah Records'
'TRCK' (Track number/Position in set)               '12/13'
'TSO2'                                              'Red Elvises'
'TSOP' (Performer sort order)                       'Red Elvises'
'TXXX:ASIN'                                         'B000005EXW'
'TXXX:Acoustid Id'                                  '3d8780ff-6048-446d-b0c0-5d9a6d27d940'
'TXXX:BARCODE'                                      '712625500529'
'TXXX:MusicBrainz Album Artist Id'                  '30480808-4c03-432c-9e94-dd3b12d4e127'
'TXXX:MusicBrainz Album Id'                         '0decc2b5-f8e4-4384-8261-5c0927fd3062'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '30480808-4c03-432c-9e94-dd3b12d4e127'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['surf', 'surf rock', 'psychobilly', 'rockabilly', 'rock', 'russian']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.71 dB'
'TXXX:replaygain_track_peak'                        '0.999593'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'84782538-35fa-421c-a6e6-d6dae66487e4')

========================== row from database ==========================
                                              'id'  1498042
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/Red Elvises/1997 Surfing in Siberia/Red Elvises - 12 - Rock N_ Roll Music.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  163
                                           'genre'  rock-pop-surf;loc-russia
                                        'filesize'  6552068
                                           'mtime'  1620737070
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner 1997 12 N_ rock pop surf;loc russia
                                      'tag_artist'  Red Elvises
                                     'tag_release'  Surfing in Siberia
                                       'tag_title'  Rock n' Roll Music
                                             'bpm'  112.321
                                    'search_title'  'music':5 'n':2,3 'rock':1 'roll':4
                                   'search_artist'  'elvises':2 'red':1
                                  'search_release'  'in':2 'siberia':3 'surfing':1
                                     'search_rest'  '1997':5 'garage':2 'loc':10,12 'n':6 'pop':8 'punk':1 'rock':7 'russia':13 'stoner':4 'surf':3,9,11
                                    'search_combo'  '1997':15 'elvises':7B 'garage':12 'in':9C 'loc':20,22 'music':5A 'n':2A,3A,16 'pop':18 'punk':11 'red':6B 'rock':1A,17 'roll':4A 'russia':23 'siberia':10C 'stoner':14 'surf':13,19,21 'surfing':8C
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['surf', 'surf rock', 'psychobilly', 'rockabilly', 'rock', 'russian']
                                        'tag_date'  1997
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620737070.456253  (2021-05-11 14:44:30)
                             'size'  6552068