======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '510'
                                          'artist'  'Parliament'
                                     'text_people'  ''
                                         'release'  "Parliament's Greatest Hits (The Bomb)"
                                           'title'  'Bop Gun (Endangered Species)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-JZFKS-4', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['p funk', 'soul', 'drjazzmrfunkmusic', '70s', 'psychedelic soul', 'funk']"
                                     'discogstags'  "['funk / soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk'
                                             'bpm'  '102.592'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Parliament's Greatest Hits (The Bomb)"
'TBPM' (BPM (beats per minute))                     '102.592'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'Bop Gun (Endangered Species)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Parliament'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '4'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'funk / soul'
'TXXX:lastfmtags'                                   ['p funk', 'soul', 'drjazzmrfunkmusic', '70s', 'psychedelic soul', 'funk']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.63 dB'
'TXXX:replaygain_track_peak'                        '0.812953'

========================== row from database ==========================
                                              'id'  1349696
                                            'path'  /data/Music/Bulk/00poprockelectronic/Parliament/[19XX] Greatest Hits/07 - Bop Gun (Endangered Species).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  510
                                           'genre'  funk or soul-funk
                                        'filesize'  12261218
                                           'mtime'  1620665792
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [19XX] 07 funk or soul funk
                                      'tag_artist'  Parliament
                                     'tag_release'  Parliament's Greatest Hits (The Bomb)
                                       'tag_title'  Bop Gun (Endangered Species)
                                             'bpm'  102.592
                                    'search_title'  'bop':1 'endangered':3,4 'gun':2 'species':5,6
                                   'search_artist'  'parliament':1
                                  'search_release'  'bomb':8,9 'greatest':4 'hits':5 'parliament':1 'parliaments':3 's':2 'the':6,7
                                     'search_rest'  '00poprockelectronic':1 '19xx':2,3 'funk':4 'or':5 'soul':6
                                    'search_combo'  '00poprockelectronic':17 '19xx':18,19 'bomb':15C,16C 'bop':1A 'endangered':3A,4A 'funk':20 'greatest':11C 'gun':2A 'hits':12C 'or':21 'parliament':7B,8C 'parliaments':10C 's':9C 'soul':22 'species':5A,6A 'the':13C,14C
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', '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-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['p funk', 'soul', 'drjazzmrfunkmusic', '70s', 'psychedelic soul', 'funk']
                                        'tag_date'  1975
                                     'discogstags'  ['funk / soul']

============================== file details ==============================
                                           'mtime'  1620665792.2305274  (2021-05-10 18:56:32)
                             'size'  12261218