======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '138'
                                          'artist'  'The Bonzo Dog Band'
                                     'text_people'  ''
                                         'release'  "The Doughnut in Granny's Green"
                                           'title'  'Trouser Press'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-LOCALNESS-1', 'Q-UNU-2', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['eccentric', 'jazz', 'comedy', 'psychedelic', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '1968'
                                        'comments'  ''
                                           'genre'  'entertaining-eccentric'
                                             'bpm'  '142.608'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "The Doughnut in Granny's Green"
'TBPM' (BPM (beats per minute))                     '142.608'
'TCON' (Content type, a.k.a. Genre)                 'entertaining-eccentric'
'TDRC' (Recording time)                             '1968'
'TIT2' (Title/songname/content description)         'Trouser Press'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Bonzo Dog Band'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['eccentric', 'jazz', 'comedy', 'psychedelic', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.27 dB'
'TXXX:replaygain_track_peak'                        '0.584487'

========================== row from database ==========================
                                              'id'  1529181
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/The Bonzo Dog Band/The Doughnut in Granny_s Greenhouse/MBZ;#The Bonzo Dog Band;#The Doughnut ____s Greenhouse;#08;#Trouser Press.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  138
                                           'genre'  entertaining-eccentric
                                        'filesize'  4421141
                                           'mtime'  1620527195
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Granny_s Greenhouse MBZ;#The Band;#The ____s Greenhouse;#08;#Trouser entertaining eccentric
                                      'tag_artist'  The Bonzo Dog Band
                                     'tag_release'  The Doughnut in Granny's Green
                                       'tag_title'  Trouser Press
                                             'bpm'  142.608
                                    'search_title'  'press':2 'trouser':1
                                   'search_artist'  'band':4 'bonzo':2 'dog':3 'the':1
                                  'search_release'  'doughnut':2 'granny':4 'grannys':6 'green':7 'in':3 's':5 'the':1
                                     'search_rest'  '08':14,17 'band':8,10 'eccentric':20 'entertaining':19 'granny':1 'greenhouse':3,13,16 'mbz':4,6 's':2,12 'the':5,7,9,11 'trouser':15,18
                                    'search_combo'  '08':27,30 'band':6B,21,23 'bonzo':4B 'dog':5B 'doughnut':8C 'eccentric':33 'entertaining':32 'granny':10C,14 'grannys':12C 'green':13C 'greenhouse':16,26,29 'in':9C 'mbz':17,19 'press':2A 's':11C,15,25 'the':3B,7C,18,20,22,24 'trouser':1A,28,31
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['eccentric', 'jazz', 'comedy', 'psychedelic', 'rock']
                                        'tag_date'  1968
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527194.7277722  (2021-05-09 04:26:34)
                             'size'  4421141