======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '209'
                                          'artist'  'Dazz Band'
                                     'text_people'  ''
                                         'release'  'Invitation To Love'
                                           'title'  'Invitation To Love'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', 'Q-JZFKS-4', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'rnb', 'soul', 'funk', 'disco']"
                                     'discogstags'  "['funk / soul', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk'
                                             'bpm'  '126.1'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Invitation To Love'
'TBPM' (BPM (beats per minute))                     '126.1'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'Invitation To Love'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dazz Band'
'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'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['funk / soul', 'funk']
'TXXX:lastfmtags'                                   ['80s', 'rnb', 'soul', 'funk', 'disco']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.62 dB'
'TXXX:replaygain_track_peak'                        '0.597063'

========================== row from database ==========================
                                              'id'  1113996
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/dazz band - 1980 invitation to love/a2 - dazz band - invitation to love.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  209
                                           'genre'  funk or soul-funk
                                        'filesize'  5029888
                                           'mtime'  1620665720
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul dazz band 1980 invitation to love a2 dazz band invitation to love funk or soul funk
                                      'tag_artist'  Dazz Band
                                     'tag_release'  Invitation To Love
                                       'tag_title'  Invitation To Love
                                             'bpm'  126.1
                                    'search_title'  'invitation':1 'love':3 'to':2
                                   'search_artist'  'band':2 'dazz':1
                                  'search_release'  'invitation':1 'love':3 'to':2
                                     'search_rest'  '1980':6 'a2':10 'band':5 'dazz':4 'funk':2 'invitation':7 'love':9 'or':11 'soul':3 'swing':1 'to':8
                                    'search_combo'  '1980':14 'a2':18 'band':5B,13 'dazz':4B,12 'funk':10 'invitation':1A,6C,15 'love':3A,8C,17 'or':19 'soul':11 'swing':9 'to':2A,7C,16
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-4', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'rnb', 'soul', 'funk', 'disco']
                                        'tag_date'  1980
                                     'discogstags'  ['funk / soul', 'funk']

============================== file details ==============================
                                           'mtime'  1620665719.8050032  (2021-05-10 18:55:19)
                             'size'  5029888