======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '198'
                                          'artist'  'Jimmy Cross'
                                     'text_people'  ''
                                         'release'  'Las Vegas Grinds'
                                           'title'  'I Want My Baby Back'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['american', 'awesome', 'usa', 'rockabilly', 'genre: country']"
                                     'discogstags'  "['pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-rockabilly or psychobilly'
                                             'bpm'  '114.999'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 000002CD 0000040E 000022A1 000024AC 0001338D 00009739 00005080 000062D2 '
 '0000E634 00004B68')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000984 000000000085716C 00000000 004891F6 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_1:eng'                            '5711BA18+340520+24+150+11453+27763+35556+45397+58830+68676+83575+95343+108135+119732+129133+138803+155725+173189+188062+195487+202397+223271+236129+247953+267292+282043+314100'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '15'
'TALB' (Album/Movie/Show title)                     'Las Vegas Grinds'
'TBPM' (BPM (beats per minute))                     '114.999'
'TCON' (Content type, a.k.a. Genre)                 'rock-rockabilly or psychobilly'
'TENC' (Encoded by)                                 'iTunes 9.2'
'TIT2' (Title/songname/content description)         'I Want My Baby Back'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jimmy Cross'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'pop'
'TXXX:lastfmtags'                                   ['american', 'awesome', 'usa', 'rockabilly', 'genre: country']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.15 dB'
'TXXX:replaygain_track_peak'                        '0.642717'

========================== row from database ==========================
                                              'id'  1298253
                                            'path'  /data/Music/Bulk/00poprockelectronic/las vegas grinds/01 I Want My Baby Back.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  198
                                           'genre'  rock-rockabilly or psychobilly
                                        'filesize'  4925266
                                           'mtime'  1620526031
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic las vegas grinds 01 rock rockabilly or psychobilly
                                      'tag_artist'  Jimmy Cross
                                     'tag_release'  Las Vegas Grinds
                                       'tag_title'  I Want My Baby Back
                                             'bpm'  114.999
                                    'search_title'  'baby':4 'back':5 'i':1 'my':3 'want':2
                                   'search_artist'  'cross':2 'jimmy':1
                                  'search_release'  'grinds':3 'las':1 'vegas':2
                                     'search_rest'  '00poprockelectronic':1 'grinds':4 'las':2 'or':7 'psychobilly':8 'rock':5 'rockabilly':6 'vegas':3
                                    'search_combo'  '00poprockelectronic':11 'baby':4A 'back':5A 'cross':7B 'grinds':10C,14 'i':1A 'jimmy':6B 'las':8C,12 'my':3A 'or':17 'psychobilly':18 'rock':15 'rockabilly':16 'vegas':9C,13 'want':2A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['american', 'awesome', 'usa', 'rockabilly', 'genre: country']
                                        'tag_date'  
                                     'discogstags'  ['pop']

============================== file details ==============================
                                           'mtime'  1620526030.884951  (2021-05-09 04:07:10)
                             'size'  4925266