======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '133'
                                          'artist'  'earth, wind & fire'
                                     'text_people'  ''
                                         'release'  "that's the way of the world"
                                           'title'  'all about love'
                                           'quals'  ("['Q-HAP-4', 'Q-LOCALNESS-1', 'Q-JZFKS-3', 'Q-HHRNBTT-2', 'Q-UNU-1', "
 "'Q-OLDST-2', 'Q-PLAY-3', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-1', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-vocals-3', 'q-mixbeat-3', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  "['rnb', '70s', 'soul', 'funk', 'disco']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '126.7'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "that's the way of the world"
'TBPM' (BPM (beats per minute))                     '126.7'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'all about love'
'TKEY' (Initial key)                                '10A'
'TLEN' (Length)                                     '395755'
'TMED' (Media type)                                 'DIG'
'TPE1' (Lead performer(s)/Soloist(s))               'earth, wind & fire'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '4'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rnb', '70s', 'soul', 'funk', 'disco']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.45 dB'
'TXXX:replaygain_track_peak'                        '0.589817'

========================== row from database ==========================
                                              'id'  1526455
                                            'path'  /data/Music/Bulk/00poprockelectronic/Disco 70_s 80_s/Earth Wind & Fire/Earth, Wind & Fire - All About Love.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  133
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  2132035
                                           'mtime'  1620537742
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Disco 70_s 80_s Earth Wind Fire Earth, Wind Fire All About Love electronic we disco italo
                                      'tag_artist'  earth, wind & fire
                                     'tag_release'  that's the way of the world
                                       'tag_title'  all about love
                                             'bpm'  126.7
                                    'search_title'  'about':2 'all':1 'love':3
                                   'search_artist'  'earth':1,2 'fire':4 'wind':3
                                  'search_release'  'of':6 's':2 'that':1 'thats':3 'the':4 'way':5 'world':7
                                     'search_rest'  '00poprockelectronic':1 '70':3 '80':5 'about':12 'all':11 'disco':2 'earth':7,10 'electronic':14 'fire':9 'italo':16 'love':13 's':4,6 'we':15 'wind':8
                                    'search_combo'  '00poprockelectronic':15 '70':17 '80':19 'about':2A,26 'all':1A,25 'disco':16 'earth':4B,5B,21,24 'electronic':28 'fire':7B,23 'italo':30 'love':3A,27 'of':13C 's':9C,18,20 'that':8C 'thats':10C 'the':11C 'way':12C 'we':29 'wind':6B,22 'world':14C
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-3', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-2', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-4', 'Q-PLAY-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['rnb', '70s', 'soul', 'funk', 'disco']
                                        'tag_date'  1980
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620537741.6994693  (2021-05-09 07:22:21)
                             'size'  2132035