======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '759'
                                          'artist'  'Lou Harrison'
                                     'text_people'  ''
                                         'release'  'Gamelan Music'
                                           'title'  '01 Philemon And Baukis'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-UNU-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-4', 'q-syn-1', 'Q-PLAY-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['gamelan', 'contemporary classical', 'avant garde', 'experimental', "
 "'classical']")
                                     'discogstags'  "['classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-asia-indonesia;mi-gamelan'
                                             'bpm'  '131.841'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Gamelan Music'
'TBPM' (BPM (beats per minute))                     '131.841'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-indonesia', 'mi-gamelan']
'TIT2' (Title/songname/content description)         '01 Philemon And Baukis'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Lou Harrison'
'TRCK' (Track number/Position in set)               '01'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:discogstags'                                  'classical'
'TXXX:lastfmtags'                                   ['gamelan',
 'contemporary classical',
 'avant garde',
 'experimental',
 'classical']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.31 dB'
'TXXX:replaygain_track_peak'                        '0.921430'

========================== row from database ==========================
                                              'id'  926684
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/gamelan/01 philemon & baukis.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  759
                                           'genre'  loc-asia-indonesia;mi-gamelan
                                        'filesize'  18227200
                                           'mtime'  1620528052
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia gamelan philemon & baukis loc asia indonesia;mi gamelan
                                      'tag_artist'  Lou Harrison
                                     'tag_release'  Gamelan Music
                                       'tag_title'  01 Philemon And Baukis
                                             'bpm'  131.841
                                    'search_title'  'and':2 'baukis':3 'philemon':1
                                   'search_artist'  'harrison':2 'lou':1
                                  'search_release'  'gamelan':1 'music':2
                                     'search_rest'  '00asia':1 'asia':6 'baukis':4 'gamelan':2 'indonesia':7,9 'loc':5 'mi':8,10 'philemon':3
                                    'search_combo'  '00asia':8 'and':2A 'asia':13 'baukis':3A,11 'gamelan':6C,9 'harrison':5B 'indonesia':14,16 'loc':12 'lou':4B 'mi':15,17 'music':7C 'philemon':1A,10
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-4', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['gamelan', 'contemporary classical', 'avant garde', 'experimental', 'classical']
                                        'tag_date'  
                                     'discogstags'  ['classical']

============================== file details ==============================
                                           'mtime'  1620528051.5099854  (2021-05-09 04:40:51)
                             'size'  18227200