======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '189'
                                          'artist'  'The Valentines'
                                     'text_people'  ''
                                         'release'  'Valentines - The Best Of'
                                           'title'  'K-I-S-S Me'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-HHRNBTT-2', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['reggae', 'all', 'doo wop', 'ska', 'rocksteady']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '15'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-pl-spelling'
                                             'bpm'  '138.040'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Valentines - The Best Of'
'TBPM' (BPM (beats per minute))                     '138.040'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-spelling'
'TIT2' (Title/songname/content description)         'K-I-S-S Me'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Valentines'
'TRCK' (Track number/Position in set)               '11/15'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['reggae', 'all', 'doo wop', 'ska', 'rocksteady']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.25 dB'
'TXXX:replaygain_track_peak'                        '0.448171'

========================== row from database ==========================
                                              'id'  760610
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/spelling/The Valentines - K-I-S-S Me 1.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  189
                                           'genre'  set-pl-spelling
                                        'filesize'  4561941
                                           'mtime'  1621696531
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes spelling 1 set pl spelling
                                      'tag_artist'  The Valentines
                                     'tag_release'  Valentines - The Best Of
                                       'tag_title'  K-I-S-S Me
                                             'bpm'  138.04
                                    'search_title'  'i':2 'k':1 'kiss':5 'me':6 's':3,4
                                   'search_artist'  'the':1 'valentines':2
                                  'search_release'  'best':3 'of':4 'the':2 'valentines':1
                                     'search_rest'  '0novelty':2 '0playlists':1 '1':5 'pl':7 'set':6 'spelling':4 'themes':3
                                    'search_combo'  '0novelty':14 '0playlists':13 '1':17 'best':11C 'i':2A 'k':1A 'kiss':5A 'me':6A 'of':12C 'pl':19 's':3A,4A 'set':18 'spelling':16 'the':7B,10C 'themes':15 'valentines':8B,9C
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['reggae', 'all', 'doo wop', 'ska', 'rocksteady']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696531.3570452  (2021-05-22 17:15:31)
                             'size'  4561941