======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '309'
                                          'artist'  'Peter Gabriel'
                                     'text_people'  ''
                                         'release'  'So'
                                           'title'  'Sledgehammer'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['classic rock', 'singer songwriter', 'progressive rock', 'pop', 'rock']"
                                     'discogstags'  "['rock', 'pop rock', 'synth-pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1986'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic;set-pl-billboard'
                                             'bpm'  '96.255'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'So'
'TBPM' (BPM (beats per minute))                     '96.255'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-classic', 'set-pl-billboard']
'TDRC' (Recording time)                             '1986'
'TIT2' (Title/songname/content description)         'Sledgehammer'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Peter Gabriel'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'pop rock', 'synth-pop']
'TXXX:lastfmtags'                                   ['classic rock', 'singer songwriter', 'progressive rock', 'pop', 'rock']
'TXXX:original release date'                        ['2002', '1986']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.61 dB'
'TXXX:replaygain_track_peak'                        '0.687919'

========================== row from database ==========================
                                              'id'  1330934
                                            'path'  /data/Music/Bulk/00poprockelectronic/Peter Gabriel_/So/Peter Gabriel - Sledgehammer.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  309
                                           'genre'  rock-cppex-classic;set-pl-billboard
                                        'filesize'  4953818
                                           'mtime'  1636039314
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Gabriel_ rock cppex classic;set pl billboard
                                      'tag_artist'  Peter Gabriel
                                     'tag_release'  So
                                       'tag_title'  Sledgehammer
                                             'bpm'  96.255
                                    'search_title'  'sledgehammer':1
                                   'search_artist'  'gabriel':2 'peter':1
                                  'search_release'  'so':1
                                     'search_rest'  '00poprockelectronic':1 'billboard':10 'classic':5,7 'cppex':4 'gabriel':2 'pl':9 'rock':3 'set':6,8
                                    'search_combo'  '00poprockelectronic':5 'billboard':14 'classic':9,11 'cppex':8 'gabriel':3B,6 'peter':2B 'pl':13 'rock':7 'set':10,12 'sledgehammer':1A 'so':4C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', 'singer songwriter', 'progressive rock', 'pop', 'rock']
                                        'tag_date'  1986
                                     'discogstags'  ['rock', 'pop rock', 'synth-pop']

============================== file details ==============================
                                           'mtime'  1636039313.9698124  (2021-11-04 16:21:53)
                             'size'  4953818