======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '62'
                                          'artist'  "Franco Bixio - (F. 'A pugni nudi')"
                                     'text_people'  ''
                                         'release'  'A Pugni Nudi'
                                           'title'  "Dog's Heart"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1974'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '145.7'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:\x1f\x17\x00\x00'                PRIV(owner='AverageLevel', data=b'\x1f\x17\x00\x00')
'PRIV:PeakValue:þ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xfe\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'A Pugni Nudi'
'TBPM' (BPM (beats per minute))                     '145.7'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1974'
'TIT2' (Title/songname/content description)         "Dog's Heart"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               "Franco Bixio - (F. 'A pugni nudi')"
'TRCK' (Track number/Position in set)               '7'
'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'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-4.96 dB'
'TXXX:replaygain_track_peak'                        '1.007271'

========================== row from database ==========================
                                              'id'  1531272
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/Franco Bixio - (F. _A pugni nudi_) - Dog_s Heart.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  62
                                           'genre'  funk or soul
                                        'filesize'  2503779
                                           'mtime'  1628357827
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul EASY Instr 70_s _A nudi_) Dog_s funk or soul
                                      'tag_artist'  Franco Bixio - (F. 'A pugni nudi')
                                     'tag_release'  A Pugni Nudi
                                       'tag_title'  Dog's Heart
                                             'bpm'  145.7
                                    'search_title'  'dog':1 'dogs':3 'heart':4 's':2
                                   'search_artist'  'a':5,6 'bixio':2 'f':3,4 'franco':1 'nudi':8,9 'pugni':7
                                  'search_release'  'a':1 'nudi':3 'pugni':2
                                     'search_rest'  '70':6 'a':8 'dog':11 'easy':4 'funk':2 'instr':5 'nudi':9,10 'or':13 's':7,12 'soul':3 'swing':1
                                    'search_combo'  '70':22 'a':9B,10B,14C,24 'bixio':6B 'dog':1A,27 'dogs':3A 'easy':20 'f':7B,8B 'franco':5B 'funk':18 'heart':4A 'instr':21 'nudi':12B,13B,16C,25,26 'or':29 'pugni':11B,15C 's':2A,23,28 'soul':19 'swing':17
                                    'tag_tracknum'  7
                                      '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-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1974
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357826.5451324  (2021-08-07 19:37:06)
                             'size'  2503779