======================== unified (from filesystem) ========================
                                         'bitrate'  '24.0'
                                        'duration'  '223'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'q en q single'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'Q-LOCALNESS-4', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-1', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'soundtrack-video-series'
                                             'bpm'  '90.050'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '90.050'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video-series'
'TIT2' (Title/songname/content description)         'q en q single'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TXXX:Mp3gain_minmax'                               '100,183'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '1'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.56 dB'
'TXXX:replaygain_track_peak'                        '0.506343'

========================== row from database ==========================
                                              'id'  795770
                                            'path'  /data/Music/Bulk/0soundtrack/TV tunes/q en q single.mp3
                                         'working'  None
                                         'bitrate'  24
                                    'duration_sec'  223
                                           'genre'  soundtrack-video-series
                                        'filesize'  672058
                                           'mtime'  1621627401
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack TV tunes soundtrack video series
                                      'tag_artist'  [unknown]
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  q en q single
                                             'bpm'  90.05
                                    'search_title'  'en':2 'q':1 'single':3
                                   'search_artist'  'unknown':1,2
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '0soundtrack':1 'series':6 'soundtrack':4 'tunes':3 'tv':2 'video':5
                                    'search_combo'  '0soundtrack':11 'album':7C 'en':2A 'non':6C 'nonalbum':8C 'q':1A 'series':16 'single':3A 'soundtrack':14 'tracks':9C,10C 'tunes':13 'tv':12 'unknown':4B,5B 'video':15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-1', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627401.4520016  (2021-05-21 22:03:21)
                             'size'  672058