======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '247'
                                          'artist'  'Bill Withers'
                                     'text_people'  ''
                                         'release'  'The Best Of Bill Withers Lean'
                                           'title'  'Lovely Day'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-JZFKS-3', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['rnb', 'rhythm and blues', 'soul', 'funk', '70s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rhythmblues'
                                             'bpm'  '98.454'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Best Of Bill Withers Lean'
'TBPM' (BPM (beats per minute))                     '98.454'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rhythmblues'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'Lovely Day'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bill Withers'
'TRCK' (Track number/Position in set)               '1'
'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', 'rhythm and blues', 'soul', 'funk', '70s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.53 dB'
'TXXX:replaygain_track_peak'                        '0.824178'

========================== row from database ==========================
                                              'id'  1303072
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/Bill Withers/MBZ;#Bill Withers;#The Best Of Bill Withers Lean On Me;#01;#Lovely Day.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  247
                                           'genre'  rock-pop-early-rhythmblues
                                        'filesize'  3962406
                                           'mtime'  1620736567
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted MBZ;#Bill Withers;#The On Me;#01;#Lovely rock pop early rhythmblues
                                      'tag_artist'  Bill Withers
                                     'tag_release'  The Best Of Bill Withers Lean
                                       'tag_title'  Lovely Day
                                             'bpm'  98.454
                                    'search_title'  'day':2 'lovely':1
                                   'search_artist'  'bill':1 'withers':2
                                  'search_release'  'best':2 'bill':4 'lean':6 'of':3 'the':1 'withers':5
                                     'search_rest'  '00poprockelectronic':1 '01':13,16 'bill':4,6 'early':20 'lovely':14,17 'mbz':3,5 'me':12,15 'on':11 'pop':19 'rhythmblues':21 'rock':18 'the':8,10 'unsorted':2 'withers':7,9
                                    'search_combo'  '00poprockelectronic':11 '01':23,26 'best':6C 'bill':3B,8C,14,16 'day':2A 'early':30 'lean':10C 'lovely':1A,24,27 'mbz':13,15 'me':22,25 'of':7C 'on':21 'pop':29 'rhythmblues':31 'rock':28 'the':5C,18,20 'unsorted':12 'withers':4B,9C,17,19
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rnb', 'rhythm and blues', 'soul', 'funk', '70s']
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736566.946187  (2021-05-11 14:36:06)
                             'size'  3962406