======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '161'
                                          'artist'  'Bix Beiderbecke'
                                     'text_people'  ''
                                         'release'  'La Grande Storia del Jazz: Bebop (disc 2)'
                                           'title'  'In a Mist'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-3', 'q-bass-1', 'q-busy-3', 'q-grit-1', "
 "'Q-PIANO-4', 'q-chart-2', 'q-drums-1', 'q-other-3', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['dixieland jazz', '20s', 'jazz', 'dixieland', 'swing']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '1920'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-o-dixiestyle'
                                             'bpm'  '86.659'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'La Grande Storia del Jazz: Bebop (disc 2)'
'TBPM' (BPM (beats per minute))                     '86.659'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-o-dixiestyle'
'TDRC' (Recording time)                             '1920'
'TIT2' (Title/songname/content description)         'In a Mist'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bix Beiderbecke'
'TRCK' (Track number/Position in set)               '14'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['dixieland jazz', '20s', 'jazz', 'dixieland', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.48 dB'
'TXXX:replaygain_track_peak'                        '0.628125'

========================== row from database ==========================
                                              'id'  671340
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Bix Beiderbecke/Bix Beiderbecke - In A Mist.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  161
                                           'genre'  prerock-jb-jazz-o-dixiestyle
                                        'filesize'  2590468
                                           'mtime'  1620573979
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country A prerock jb jazz dixiestyle
                                      'tag_artist'  Bix Beiderbecke
                                     'tag_release'  La Grande Storia del Jazz: Bebop (disc 2)
                                       'tag_title'  In a Mist
                                             'bpm'  86.659
                                    'search_title'  'a':2 'in':1 'mist':3
                                   'search_artist'  'beiderbecke':2 'bix':1
                                  'search_release'  '2':10,11 'bebop':7 'del':4 'disc':8,9 'grande':2 'jazz':5,6 'la':1 'storia':3
                                     'search_rest'  'a':5 'country':4 'dixiestyle':8 'exotica':2 'jazz':1 'jb':7 'oldies':3 'prerock':6
                                    'search_combo'  '2':15C,16C 'a':2A,21 'bebop':12C 'beiderbecke':5B 'bix':4B 'country':20 'del':9C 'disc':13C,14C 'dixiestyle':24 'exotica':18 'grande':7C 'in':1A 'jazz':10C,11C,17 'jb':23 'la':6C 'mist':3A 'oldies':19 'prerock':22 'storia':8C
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['dixieland jazz', '20s', 'jazz', 'dixieland', 'swing']
                                        'tag_date'  1920
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620573978.918456  (2021-05-09 17:26:18)
                             'size'  2590468