======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '737'
                                          'artist'  'Miles Davis'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Solea'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-2', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['fusion', 'jazz', 'trumpet', 'blues', 'bebop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1960'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '137.478'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '137.478'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1960'
'TIT2' (Title/songname/content description)         'Solea'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Miles Davis'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['fusion', 'jazz', 'trumpet', 'blues', 'bebop']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.26 dB'
'TXXX:replaygain_track_peak'                        '0.706361'

========================== row from database ==========================
                                              'id'  1349688
                                            'path'  /data/Music/Bulk/00poprockelectronic/Miles Davis/Sketches of Spain [1960]/Miles Davis - Solea.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  737
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  14747442
                                           'mtime'  1620541005
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Sketches of Spain [1960] prerock jb jazz unsorted
                                      'tag_artist'  Miles Davis
                                     'tag_release'  None
                                       'tag_title'  Solea
                                             'bpm'  137.478
                                    'search_title'  'solea':1
                                   'search_artist'  'davis':2 'miles':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '1960':5,6 'jazz':9 'jb':8 'of':3 'prerock':7 'sketches':2 'spain':4 'unsorted':10
                                    'search_combo'  '00poprockelectronic':4 '1960':8,9 'davis':3B 'jazz':12 'jb':11 'miles':2B 'of':6 'prerock':10 'sketches':5 'solea':1A 'spain':7 'unsorted':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['fusion', 'jazz', 'trumpet', 'blues', 'bebop']
                                        'tag_date'  1960
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620541005.2837849  (2021-05-09 08:16:45)
                             'size'  14747442