======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '172'
                                          'artist'  'Firehouse Five'
                                     'text_people'  ''
                                         'release'  'Firehouse Five'
                                           'title'  'Just a stomp at twilight'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['dixieland', 'jazz', 'ragtime', 'dixieland jazz', 'dixie']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-o-dixiestyle'
                                             'bpm'  '114.803'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Firehouse Five'
'TBPM' (BPM (beats per minute))                     '114.803'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-o-dixiestyle'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         'Just a stomp at twilight'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Firehouse Five'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['dixieland', 'jazz', 'ragtime', 'dixieland jazz', 'dixie']
'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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.06 dB'
'TXXX:replaygain_track_peak'                        '0.524076'

========================== row from database ==========================
                                              'id'  679703
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Dixieland/Firehouse Five/Just a stomp at twilight.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  172
                                           'genre'  prerock-jb-jazz-o-dixiestyle
                                        'filesize'  3449563
                                           'mtime'  1620528478
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Dixieland prerock jb jazz dixiestyle
                                      'tag_artist'  Firehouse Five
                                     'tag_release'  Firehouse Five
                                       'tag_title'  Just a stomp at twilight
                                             'bpm'  114.803
                                    'search_title'  'a':2 'at':4 'just':1 'stomp':3 'twilight':5
                                   'search_artist'  'firehouse':1 'five':2
                                  'search_release'  'firehouse':1 'five':2
                                     'search_rest'  'country':4 'dixieland':5 'dixiestyle':8 'exotica':2 'jazz':1 'jb':7 'oldies':3 'prerock':6
                                    'search_combo'  'a':2A 'at':4A 'country':13 'dixieland':14 'dixiestyle':17 'exotica':11 'firehouse':6B,8C 'five':7B,9C 'jazz':10 'jb':16 'just':1A 'oldies':12 'prerock':15 'stomp':3A 'twilight':5A
                                    '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-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['dixieland', 'jazz', 'ragtime', 'dixieland jazz', 'dixie']
                                        'tag_date'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528478.3752491  (2021-05-09 04:47:58)
                             'size'  3449563