======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '85'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Big Bad Mutha Fuka Vol.1'
                                           'title'  "(track 16 LP 'Big Bad Mutha Fuka' da vari Film)"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-4', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  '29'
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk'
                                             'bpm'  '103.6'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 00000921 0000008D 00010084 0000373E 00012663 0000789C 00007F69 00008324 '
 '0000C297 00012D39')
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000AEC 0000000000396084 00000000 00000000 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_1:eng'                            'B112BB1D+359815+29+150+6814+22480+45884+63580+74867+81641+93596+119423+140039+151161+162537+167235+178797+181472+198465+204860+218788+231110+240915+243857+272075+278273+283522+289744+302985+306054+309649+325225'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '16'
'TALB' (Album/Movie/Show title)                     'Big Bad Mutha Fuka Vol.1'
'TBPM' (BPM (beats per minute))                     '103.6'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk'
'TDRC' (Recording time)                             '1975'
'TENC' (Encoded by)                                 'iTunes v6.0.1'
'TIT2' (Title/songname/content description)         "(track 16 LP 'Big Bad Mutha Fuka' da vari Film)"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TRCK' (Track number/Position in set)               '16/29'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '4'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.29 dB'
'TXXX:replaygain_track_peak'                        '0.986482'

========================== row from database ==========================
                                              'id'  1523156
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/• (Unk. Artist) - (track 16 LP _Big Bad Mutha Fuka_ da vari Film).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  85
                                           'genre'  funk or soul-funk
                                        'filesize'  1367639
                                           'mtime'  1620665623
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul EASY Instr 70_s • (Unk. Artist) _Big Fuka_ funk or soul funk
                                      'tag_artist'  [unknown]
                                     'tag_release'  Big Bad Mutha Fuka Vol.1
                                       'tag_title'  (track 16 LP 'Big Bad Mutha Fuka' da vari Film)
                                             'bpm'  103.6
                                    'search_title'  'bad':6 'big':4,5 'da':10 'film':12,13 'fuka':8,9 'lp':3 'mutha':7 'track':1,2 'vari':11
                                   'search_artist'  'unknown':1,2
                                  'search_release'  '1':6 'bad':2 'big':1 'fuka':4 'mutha':3 'vol':5 'vol1':7
                                     'search_rest'  '70':6 'artist':10,11 'big':12 'easy':4 'fuka':13 'funk':2 'instr':5 'or':14 's':7 'soul':3 'swing':1 'unk':8,9
                                    'search_combo'  '1':21C '70':28 'artist':32,33 'bad':6A,17C 'big':4A,5A,16C,34 'da':10A 'easy':26 'film':12A,13A 'fuka':8A,9A,19C,35 'funk':24 'instr':27 'lp':3A 'mutha':7A,18C 'or':36 's':29 'soul':25 'swing':23 'track':1A,2A 'unk':30,31 'unknown':14B,15B 'vari':11A 'vol':20C 'vol1':22C
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620665622.826228  (2021-05-10 18:53:42)
                             'size'  1367639