======================== unified (from filesystem) ========================
                                         'bitrate'  '243.084'
                                        'duration'  '386'
                                          'artist'  'Underworld'
                                     'text_people'  ''
                                         'release'  'Dirty Epic / Cowgirl'
                                           'title'  'River of Bass'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
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 "'q-chart-4', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
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                                      'lastfmtags'  "['electronica', 'dance', 'techno', 'electronic', 'trance']"
                                     'discogstags'  "['electronic', 'techno', 'progressive trance']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '8'
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno;electronic-th-trance'
                                             'bpm'  '93'
                                             'key'  '3A'
                                        'acoustid'  '033ee223-f41c-46e7-958d-3b42f0b05e03'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Dirty Epic / Cowgirl'
'TBPM' (BPM (beats per minute))                     '93'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-th-techno', 'electronic-th-trance']
'TDOR' (Original release time)                      '1994'
'TDRC' (Recording time)                             '1994-12-01'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'Darren Emerson'], ['producer', 'Karl Hyde'], ['producer', 'Rick Smith']])
'TIT2' (Title/songname/content description)         'River of Bass'
'TKEY' (Initial key)                                '3A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Underworld'
'TPE2' (Band/orchestra/accompaniment)               'Underworld'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Wax Trax! Records'
'TRCK' (Track number/Position in set)               '8/8'
'TSO2'                                              'Underworld'
'TSOP' (Performer sort order)                       'Underworld'
'TXXX:ASIN'                                         'B000003RJ3'
'TXXX:Acoustid Id'                                  '033ee223-f41c-46e7-958d-3b42f0b05e03'
'TXXX:Artists'                                      'Underworld'
'TXXX:BARCODE'                                      '016581872226'
'TXXX:CATALOGNUMBER'                                'TVT 8722-2'
'TXXX:MusicBrainz Album Artist Id'                  'ba2f4f3b-0293-4bc8-bb94-2f73b5207343'
'TXXX:MusicBrainz Album Id'                         'e0111ec4-d253-4355-a97b-47af376dc0b1'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'single'
'TXXX:MusicBrainz Artist Id'                        'ba2f4f3b-0293-4bc8-bb94-2f73b5207343'
'TXXX:MusicBrainz Release Group Id'                 'c5e9b3c5-920a-32cd-96ea-dc98d1b45586'
'TXXX:MusicBrainz Release Track Id'                 '9bc92d9c-88e7-367b-9d3c-3d4afa97eb1f'
'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'                                  ['electronic', 'techno', 'progressive trance']
'TXXX:lastfmtags'                                   ['electronica', 'dance', 'techno', 'electronic', 'trance']
'TXXX:originalyear'                                 '1994'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.29 dB'
'TXXX:replaygain_track_peak'                        '0.960715'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'6121100f-1c92-4cf0-915b-f565ffcf1d67')

========================== row from database ==========================
                                              'id'  1357969
                                            'path'  /data/Music/Bulk/00poprockelectronic/Underworld/Dirty Epic Cowgirl/Underworld - Dirty Epic Cowgirl - 08 - River of Bass.mp3
                                         'working'  None
                                         'bitrate'  243
                                    'duration_sec'  386
                                           'genre'  electronic-th-techno;electronic-th-trance
                                        'filesize'  11788856
                                           'mtime'  1620572460
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 08 electronic th techno;electronic th trance
                                      'tag_artist'  Underworld
                                     'tag_release'  Dirty Epic / Cowgirl
                                       'tag_title'  River of Bass
                                             'bpm'  93.0
                                    'search_title'  'bass':3 'of':2 'river':1
                                   'search_artist'  'underworld':1
                                  'search_release'  'cowgirl':3 'dirty':1 'epic':2
                                     'search_rest'  '00poprockelectronic':1 'electronic':2,5,7 'techno':4,6 'th':3 'trance':8
                                    'search_combo'  '00poprockelectronic':8 'bass':3A 'cowgirl':7C 'dirty':5C 'electronic':9,12,14 'epic':6C 'of':2A 'river':1A 'techno':11,13 'th':10 'trance':15 'underworld':4B
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-4', 'q-chart-4', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'dance', 'techno', 'electronic', 'trance']
                                        'tag_date'  1994
                                     'discogstags'  ['electronic', 'techno', 'progressive trance']

============================== file details ==============================
                                           'mtime'  1620572459.8840184  (2021-05-09 17:00:59)
                             'size'  11788856