======================== unified (from filesystem) ========================
                                         'bitrate'  '183.362'
                                        'duration'  '206'
                                          'artist'  'Earth, Wind & Fire'
                                     'text_people'  ''
                                         'release'  "Diggin' Deeper Vol.6"
                                           'title'  'Caribou (sam.)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-3', 'Q-HHRNBTT-2', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['rnb', '70s', 'soul', 'funk', 'disco']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '98.8'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Diggin' Deeper Vol.6"
'TBPM' (BPM (beats per minute))                     '98.8'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Caribou (sam.)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Earth, Wind & Fire'
'TRCK' (Track number/Position in set)               '13'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rnb', '70s', 'soul', 'funk', 'disco']
'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'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-7.32 dB'
'TXXX:replaygain_track_peak'                        '1.024832'

========================== row from database ==========================
                                              'id'  1525930
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/Earth, Wind & Fire - Caribou (sam.).mp3
                                         'working'  None
                                         'bitrate'  183
                                    'duration_sec'  206
                                           'genre'  funk or soul
                                        'filesize'  4732401
                                           'mtime'  1628357817
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul EASY Instr 70_s funk or soul
                                      'tag_artist'  Earth, Wind & Fire
                                     'tag_release'  Diggin' Deeper Vol.6
                                       'tag_title'  Caribou (sam.)
                                             'bpm'  98.8
                                    'search_title'  'caribou':1 'sam':2,3
                                   'search_artist'  'earth':1,2 'fire':4 'wind':3
                                  'search_release'  '6':5 'deeper':3 'diggin':1,2 'vol':4 'vol6':6
                                     'search_rest'  '70':6 'easy':4 'funk':2 'instr':5 'or':8 's':7 'soul':3 'swing':1
                                    'search_combo'  '6':12C '70':19 'caribou':1A 'deeper':10C 'diggin':8C,9C 'earth':4B,5B 'easy':17 'fire':7B 'funk':15 'instr':18 'or':21 's':20 'sam':2A,3A 'soul':16 'swing':14 'vol':11C 'vol6':13C 'wind':6B
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  8A
                                           '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-3', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rnb', '70s', 'soul', 'funk', 'disco']
                                        'tag_date'  2001
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357817.4039793  (2021-08-07 19:36:57)
                             'size'  4732401