======================== unified (from filesystem) ========================
                                         'bitrate'  '244.0'
                                        'duration'  '159'
                                          'artist'  'Canadian Brass'
                                     'text_people'  ''
                                         'release'  'Ragtime!'
                                           'title'  'Bossa Nova Bach'
                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['classical', 'canadian', 'instrumental', 'brass ensemble', 'brass', "
 "'christmas']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  '20'
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '99.420'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'Cleaned by TuneUp!'
'COMM:ID3v1 Comment:XXX'                            'Cleaned by TuneUp!'
'COMM:iTunNORM:eng'                                 (' 000000BC 0000005A 00001D74 00000907 00018662 0001FD4C 000051D3 00003A90 '
 '0001864B 0001FD34')
'TALB' (Album/Movie/Show title)                     'Ragtime!'
'TBPM' (BPM (beats per minute))                     '99.420'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'Bossa Nova Bach'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Canadian Brass'
'TPE2' (Band/orchestra/accompaniment)               'Canadian Brass'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '15/20'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['classical',
 'canadian',
 'instrumental',
 'brass ensemble',
 'brass',
 'christmas']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+3.81 dB'
'TXXX:replaygain_track_peak'                        '0.904080'

========================== row from database ==========================
                                              'id'  1285704
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/canadian brass - bossa nova bach.mp3
                                         'working'  None
                                         'bitrate'  244
                                    'duration_sec'  159
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  4857856
                                           'mtime'  1637329821
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] canadian brass bossa nova bach prerock classical or classical instruments
                                      'tag_artist'  Canadian Brass
                                     'tag_release'  Ragtime!
                                       'tag_title'  Bossa Nova Bach
                                             'bpm'  99.42
                                    'search_title'  'bach':3 'bossa':1 'nova':2
                                   'search_artist'  'brass':2 'canadian':1
                                  'search_release'  'ragtime':1
                                     'search_rest'  '00poprockelectronic':1 'bach':11 'bossa':9 'brass':8 'canadian':7 'classical':13 'files':5,6 'instruments':15 'loose':3,4 'nova':10 'or':14 'prerock':12 'unsorted':2
                                    'search_combo'  '00poprockelectronic':7 'bach':3A,17 'bossa':1A,15 'brass':5B,14 'canadian':4B,13 'classical':19 'files':11,12 'instruments':21 'loose':9,10 'nova':2A,16 'or':20 'prerock':18 'ragtime':6C 'unsorted':8
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['classical', 'canadian', 'instrumental', 'brass ensemble', 'brass', 'christmas']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637329821.128298  (2021-11-19 14:50:21)
                             'size'  4857856