======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '263'
                                          'artist'  'Peter Cetera'
                                     'text_people'  ''
                                         'release'  'Solitude / Solitaire'
                                           'title'  'Glory of love'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'adult contemporary', 'rock', 'pop', 'classic rock']"
                                     'discogstags'  "['electronic', 'rock', 'pop rock', 'soft rock', 'hi nrg', 'synth-pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '9'
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'rock-pop;set-pl-zomg80s;set-pl-billboard'
                                             'bpm'  '145.3'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 00000396 000000BC 00002FA2 00000FED 0002BF5E 000287C1 00006728 00006654 '
 '0002667D 0001DEC6')
'COMM:iTunes_CDDB_1:eng'                            '69094609+178267+9+150+25842+44085+63855+81347+98297+115257+135477+158042'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '3'
'TALB' (Album/Movie/Show title)                     'Solitude / Solitaire'
'TBPM' (BPM (beats per minute))                     '145.3'
'TCON' (Content type, a.k.a. Genre)                 ['rock-pop', 'set-pl-zomg80s', 'set-pl-billboard']
'TDRC' (Recording time)                             '1985'
'TENC' (Encoded by)                                 'iTunes v4.6.0.15'
'TIT2' (Title/songname/content description)         'Glory of love'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Peter Cetera'
'TRCK' (Track number/Position in set)               '3/9'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'rock', 'pop rock', 'soft rock', 'hi nrg', 'synth-pop']
'TXXX:lastfmtags'                                   ['80s', 'adult contemporary', 'rock', 'pop', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.17 dB'
'TXXX:replaygain_track_peak'                        '0.813862'

========================== row from database ==========================
                                              'id'  1121333
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Solitude _ Solitaire/03 Glory of love.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  263
                                           'genre'  rock-pop;set-pl-zomg80s;set-pl-billboard
                                        'filesize'  4220577
                                           'mtime'  1620380527
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm _ 03 rock pop;set pl zomg80s;set pl billboard
                                      'tag_artist'  Peter Cetera
                                     'tag_release'  Solitude / Solitaire
                                       'tag_title'  Glory of love
                                             'bpm'  145.3
                                    'search_title'  'glory':1 'love':3 'of':2
                                   'search_artist'  'cetera':2 'peter':1
                                  'search_release'  'solitaire':2 'solitude':1
                                     'search_rest'  'billboard':11 'pl':6 'pop':2,4 'rock':1 'set':3,5,8,10 'zomg80s':7,9
                                    'search_combo'  'billboard':18 'cetera':5B 'glory':1A 'love':3A 'of':2A 'peter':4B 'pl':13 'pop':9,11 'rock':8 'set':10,12,15,17 'solitaire':7C 'solitude':6C 'zomg80s':14,16
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'adult contemporary', 'rock', 'pop', 'classic rock']
                                        'tag_date'  1985
                                     'discogstags'  ['electronic', 'rock', 'pop rock', 'soft rock', 'hi nrg', 'synth-pop']

============================== file details ==============================
                                           'mtime'  1620380526.838471  (2021-05-07 11:42:06)
                             'size'  4220577