======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '201'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Big Bad Mutha Fuka Vol.2'
                                           'title'  "(track 51 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-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '22'
                                      'tracktotal'  '31'
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk'
                                             'bpm'  '111.3'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 00000ABD 000005ED 00006214 00005933 0001FF6D 0002816D 000085DC 0000843D '
 '000133A7 000133A7')
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000A08 0000000000877F68 00000000 00000000 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_1:eng'                            'EF12B31F+359175+31+150+5806+15211+30666+41862+54715+69459+90209+103470+109167+124401+138602+152458+163522+170153+181252+187178+205114+213945+224068+234485+254220+269322+292125+294451+309160+319060+332120+340079+343364+355997'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '22'
'TALB' (Album/Movie/Show title)                     'Big Bad Mutha Fuka Vol.2'
'TBPM' (BPM (beats per minute))                     '111.3'
'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 51 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)               '22/31'
'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'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-4.85 dB'
'TXXX:replaygain_track_peak'                        '1.030834'

========================== row from database ==========================
                                              'id'  1531730
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/• (Unk. Artist) - (track 51 LP _Big Bad Mutha Fuka_ da vari Film).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  201
                                           'genre'  funk or soul-funk
                                        'filesize'  3225050
                                           'mtime'  1620665625
                                   '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.2
                                       'tag_title'  (track 51 LP 'Big Bad Mutha Fuka' da vari Film)
                                             'bpm'  111.3
                                    'search_title'  '51':3 'bad':7 'big':5,6 'da':11 'film':13,14 'fuka':9,10 'lp':4 'mutha':8 'track':1,2 'vari':12
                                   'search_artist'  'unknown':1,2
                                  'search_release'  '2':6 'bad':2 'big':1 'fuka':4 'mutha':3 'vol':5 'vol2':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'  '2':22C '51':3A '70':29 'artist':33,34 'bad':7A,18C 'big':5A,6A,17C,35 'da':11A 'easy':27 'film':13A,14A 'fuka':9A,10A,20C,36 'funk':25 'instr':28 'lp':4A 'mutha':8A,19C 'or':37 's':30 'soul':26 'swing':24 'track':1A,2A 'unk':31,32 'unknown':15B,16B 'vari':12A 'vol':21C 'vol2':23C
                                    'tag_tracknum'  22
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-2', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620665625.2875376  (2021-05-10 18:53:45)
                             'size'  3225050