======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '179'
                                          'artist'  'Harold Faltermeyer'
                                     'text_people'  ''
                                         'release'  'Electric (Disc 2)'
                                           'title'  'Axel F'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-3']")
                                      'lastfmtags'  "['instrumental', 'german', 'synthpop', 'soundtrack', '80s', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted;set-pl-billboard'
                                             'bpm'  '117.466'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Electric (Disc 2)'
'TBPM' (BPM (beats per minute))                     '117.466'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Axel F'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Harold Faltermeyer'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['instrumental', 'german', 'synthpop', 'soundtrack', '80s', 'electronic']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.02 dB'
'TXXX:replaygain_track_peak'                        '0.617278'

========================== row from database ==========================
                                              'id'  1295931
                                            'path'  /data/Music/Bulk/00poprockelectronic/Harold Faltermeyer/Harold Faltermeyer__Electric (Disc 2)__04 - Axel F.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  179
                                           'genre'  electronic-unsorted;set-pl-billboard
                                        'filesize'  4303665
                                           'mtime'  1620385261
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Faltermeyer__Electric 2)__04 electronic unsorted;set pl billboard
                                      'tag_artist'  Harold Faltermeyer
                                     'tag_release'  Electric (Disc 2)
                                       'tag_title'  Axel F
                                             'bpm'  117.466
                                    'search_title'  'axel':1 'f':2
                                   'search_artist'  'faltermeyer':2 'harold':1
                                  'search_release'  '2':4,5 'disc':2,3 'electric':1
                                     'search_rest'  '00poprockelectronic':1 '04':5,7 '2':4,6 'billboard':14 'electric':3 'electronic':8 'faltermeyer':2 'pl':13 'set':10,12 'unsorted':9,11
                                    'search_combo'  '00poprockelectronic':10 '04':14,16 '2':8C,9C,13,15 'axel':1A 'billboard':23 'disc':6C,7C 'electric':5C,12 'electronic':17 'f':2A 'faltermeyer':4B,11 'harold':3B 'pl':22 'set':19,21 'unsorted':18,20
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'german', 'synthpop', 'soundtrack', '80s', 'electronic']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620385260.7777553  (2021-05-07 13:01:00)
                             'size'  4303665