======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '423'
                                          'artist'  'Coldcut'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Music 4 No Musicians'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-2', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronica', 'electronic', 'ninja tune', 'turntablism', 'trip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '139.9'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '139.9'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'Music 4 No Musicians'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Coldcut'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['electronica', 'electronic', 'ninja tune', 'turntablism', 'trip hop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.76 dB'
'TXXX:replaygain_track_peak'                        '0.591582'

========================== row from database ==========================
                                              'id'  723570
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/coldcut - 1997 - let us play/06 - Coldcut - Music 4 No Musicians.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  423
                                           'genre'  electronic-experimental
                                        'filesize'  6780067
                                           'mtime'  1622801402
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm coldcut 1997 let play 06 electronic experimental
                                      'tag_artist'  Coldcut
                                     'tag_release'  None
                                       'tag_title'  Music 4 No Musicians
                                             'bpm'  139.9
                                    'search_title'  '4':2 'music':1 'musicians':4 'no':3
                                   'search_artist'  'coldcut':1
                                  'search_release'  
                                     'search_rest'  '1997':2 'coldcut':1 'electronic':5 'experimental':6 'let':3 'play':4
                                    'search_combo'  '1997':7 '4':2A 'coldcut':5B,6 'electronic':10 'experimental':11 'let':8 'music':1A 'musicians':4A 'no':3A 'play':9
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'electronic', 'ninja tune', 'turntablism', 'trip hop']
                                        'tag_date'  1997
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622801402.3142276  (2021-06-04 12:10:02)
                             'size'  6780067