======================== unified (from filesystem) ========================
                                         'bitrate'  '64.0'
                                        'duration'  '155'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Easy Instr 70s'
                                           'title'  "(L'uomo da 6 milioni di Dollari (Sigla TF.)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '136.1'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 00001014 00001018 00002BB6 0000372B 00013897 00013897 00006D71 00006E0A '
 '000222F7 0000EAA5')
'TALB' (Album/Movie/Show title)                     'Easy Instr 70s'
'TBPM' (BPM (beats per minute))                     '136.1'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         "(L'uomo da 6 milioni di Dollari (Sigla TF.)"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TSSE' (Software/Hardware and settings used for encoding)  'MPecker MPEG Audio Encoder for Macintosh/MacOS 1.0.0 (Beta 11)'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'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'                                      '4'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.40 dB'
'TXXX:replaygain_track_peak'                        '0.894467'

========================== row from database ==========================
                                              'id'  1531217
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/• (Uncred. Artist) - (L_uomo da 6 milioni di Dollari (Sigla TF.).mp3
                                         'working'  None
                                         'bitrate'  64
                                    'duration_sec'  155
                                           'genre'  funk or soul
                                        'filesize'  1249281
                                           'mtime'  1628357837
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul EASY 70_s • (Uncred. Artist) (L_uomo funk or soul
                                      'tag_artist'  [unknown]
                                     'tag_release'  Easy Instr 70s
                                       'tag_title'  (L'uomo da 6 milioni di Dollari (Sigla TF.)
                                             'bpm'  136.1
                                    'search_title'  '6':5 'da':4 'di':7 'dollari':8 'l':1 'luomo':3 'milioni':6 'sigla':9,10 'tf':11,12 'uomo':2
                                   'search_artist'  'unknown':1,2
                                  'search_release'  '70s':3 'easy':1 'instr':2
                                     'search_rest'  '70':5 'artist':9,10 'easy':4 'funk':2 'l':11,13 'or':15 's':6 'soul':3 'swing':1 'uncred':7,8 'uomo':12,14
                                    'search_combo'  '6':5A '70':22 '70s':17C 'artist':26,27 'da':4A 'di':7A 'dollari':8A 'easy':15C,21 'funk':19 'instr':16C 'l':1A,28,30 'luomo':3A 'milioni':6A 'or':32 's':23 'sigla':9A,10A 'soul':20 'swing':18 'tf':11A,12A 'uncred':24,25 'unknown':13B,14B 'uomo':2A,29,31
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           '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-2', 'q-busy-3', 'q-drums-4', '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'  1628357837.3122811  (2021-08-07 19:37:17)
                             'size'  1249281