======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '228'
                                          'artist'  'The Specials'
                                     'text_people'  ''
                                         'release'  'The Singles Colection'
                                           'title'  'Racist Friend'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-UNU-2', 'Q-HHRNBTT-2', 'Q-LOCALNESS-3', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'reggae', 'two tone', 'ska', 'punk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-style-reggae or dub or ska or dancehall-ska'
                                             'bpm'  '105.368'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Singles Colection'
'TBPM' (BPM (beats per minute))                     '105.368'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-reggae or dub or ska or dancehall-ska'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Racist Friend'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Specials'
'TPE2' (Band/orchestra/accompaniment)               'The Specials'
'TRCK' (Track number/Position in set)               '14'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['80s', 'reggae', 'two tone', 'ska', 'punk']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.11 dB'
'TXXX:replaygain_track_peak'                        '0.731766'

========================== row from database ==========================
                                              'id'  1382341
                                            'path'  /data/Music/Bulk/00localcharacter/00reggae-dub/The Specials/The Singles Colection/14 - the specials - racist friend.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  228
                                           'genre'  loc-style-reggae or dub or ska or dancehall-ska
                                        'filesize'  7323823
                                           'mtime'  1620522521
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00reggae dub 14 the specials racist friend loc style reggae or dub or ska or dancehall ska
                                      'tag_artist'  The Specials
                                     'tag_release'  The Singles Colection
                                       'tag_title'  Racist Friend
                                             'bpm'  105.368
                                    'search_title'  'friend':2 'racist':1
                                   'search_artist'  'specials':2 'the':1
                                  'search_release'  'colection':3 'singles':2 'the':1
                                     'search_rest'  '00reggae':1 'dancehall':12 'dub':2 'friend':6 'loc':7 'or':10 'racist':5 'reggae':9 'ska':11 'specials':4 'style':8 'the':3
                                    'search_combo'  '00reggae':8 'colection':7C 'dancehall':19 'dub':9 'friend':2A,13 'loc':14 'or':17 'racist':1A,12 'reggae':16 'singles':6C 'ska':18 'specials':4B,11 'style':15 'the':3B,5C,10
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'reggae', 'two tone', 'ska', 'punk']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620522520.6826928  (2021-05-09 03:08:40)
                             'size'  7323823