======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '414'
                                          'artist'  'Ohio Players'
                                     'text_people'  ('Billy Beck-Leroy "Sugarfoot" Bonner-Marshall "Rock" Jones-Ralph "Pee Wee" '
 'Middlebrooks-The Ohio Players-Clarence "Satch" Satchell-James "Diamond" '
 'Williams')
                                         'release'  'Fire'
                                           'title'  'I Want To Be Free'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', 'Q-JZFKS-4', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['disco', 'rhythm and blues', 'soul', 'funk', '70s']"
                                     'discogstags'  "['funk / soul', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '8'
                                            'date'  '1974'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk'
                                             'bpm'  '142.7'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 000003BE 00000400 000047CC 000041F1 0000C263 0000C263 000081E7 00006699 '
 '00000E97 0004C87D')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000A74 000000000116D3FC 00000000 00CA41F6 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '8+4A9C73931BC1B3DA2BBC663E7356C814+175759'
'TALB' (Album/Movie/Show title)                     'Fire'
'TBPM' (BPM (beats per minute))                     '142.7'
'TCOM' (Composer)                                   ('Billy Beck-Leroy "Sugarfoot" Bonner-Marshall "Rock" Jones-Ralph "Pee Wee" '
 'Middlebrooks-The Ohio Players-Clarence "Satch" Satchell-James "Diamond" '
 'Williams')
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk'
'TDRC' (Recording time)                             '1974'
'TENC' (Encoded by)                                 'iTunes v7.5'
'TIT2' (Title/songname/content description)         'I Want To Be Free'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ohio Players'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '4/8'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '4'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['funk / soul', 'funk']
'TXXX:lastfmtags'                                   ['disco', 'rhythm and blues', 'soul', 'funk', '70s']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.44 dB'
'TXXX:replaygain_track_peak'                        '0.719994'

========================== row from database ==========================
                                              'id'  1113831
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/ohio players/1974 2 fire/a4 ohio players - i want to be free.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  414
                                           'genre'  funk or soul-funk
                                        'filesize'  15499669
                                           'mtime'  1620665752
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul ohio players 1974 2 fire a4 ohio players want to be free funk or soul funk
                                      'tag_artist'  Ohio Players
                                     'tag_release'  Fire
                                       'tag_title'  I Want To Be Free
                                             'bpm'  142.7
                                    'search_title'  'be':4 'free':5 'i':1 'to':3 'want':2
                                   'search_artist'  'ohio':1 'players':2
                                  'search_release'  'fire':1
                                     'search_rest'  '1974':6 '2':7 'a4':9 'be':12 'fire':8 'free':13 'funk':2 'ohio':4 'or':14 'players':5 'soul':3 'swing':1 'to':11 'want':10
                                    'search_combo'  '1974':14 '2':15 'a4':17 'be':4A,20 'fire':8C,16 'free':5A,21 'funk':10 'i':1A 'ohio':6B,12 'or':22 'players':7B,13 'soul':11 'swing':9 'to':3A,19 'want':2A,18
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-4', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['disco', 'rhythm and blues', 'soul', 'funk', '70s']
                                        'tag_date'  1974
                                     'discogstags'  ['funk / soul', 'funk']

============================== file details ==============================
                                           'mtime'  1620665751.84473  (2021-05-10 18:55:51)
                             'size'  15499669