======================== unified (from filesystem) ========================
                                         'bitrate'  '229.324'
                                        'duration'  '255'
                                          'artist'  'Ohio Players'
                                     'text_people'  ''
                                         'release'  'Angel'
                                           'title'  'Merry Go Round'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', 'Q-JZFKS-4', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['disco', 'rhythm and blues', 'soul', 'funk', '70s']"
                                     'discogstags'  "['funk / soul', 'soul', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk'
                                             'bpm'  '124.7'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Angel'
'TBPM' (BPM (beats per minute))                     '124.7'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk'
'TDRC' (Recording time)                             '1977'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Merry Go Round'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ohio Players'
'TPE2' (Band/orchestra/accompaniment)               'Ohio Players'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '4'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['funk / soul', 'soul', 'funk']
'TXXX:lastfmtags'                                   ['disco', 'rhythm and blues', 'soul', 'funk', '70s']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.91 dB'
'TXXX:replaygain_track_peak'                        '0.534085'

========================== row from database ==========================
                                              'id'  1113774
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/ohio players/1977 1 angel/a2 ohio players - merry go round.mp3
                                         'working'  None
                                         'bitrate'  229
                                    'duration_sec'  255
                                           'genre'  funk or soul-funk
                                        'filesize'  7365101
                                           'mtime'  1620665768
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul ohio players 1977 1 angel a2 ohio players merry go round funk or soul funk
                                      'tag_artist'  Ohio Players
                                     'tag_release'  Angel
                                       'tag_title'  Merry Go Round
                                             'bpm'  124.7
                                    'search_title'  'go':2 'merry':1 'round':3
                                   'search_artist'  'ohio':1 'players':2
                                  'search_release'  'angel':1
                                     'search_rest'  '1':7 '1977':6 'a2':9 'angel':8 'funk':2 'go':11 'merry':10 'ohio':4 'or':13 'players':5 'round':12 'soul':3 'swing':1
                                    'search_combo'  '1':13 '1977':12 'a2':15 'angel':6C,14 'funk':8 'go':2A,17 'merry':1A,16 'ohio':4B,10 'or':19 'players':5B,11 'round':3A,18 'soul':9 'swing':7
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-4', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['disco', 'rhythm and blues', 'soul', 'funk', '70s']
                                        'tag_date'  1977
                                     'discogstags'  ['funk / soul', 'soul', 'funk']

============================== file details ==============================
                                           'mtime'  1620665767.8558629  (2021-05-10 18:56:07)
                             'size'  7365101