======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '327'
                                          'artist'  'Explosions In The Sky'
                                     'text_people'  ''
                                         'release'  'How Strange, Innocence'
                                           'title'  'Remember Me As A Time Of Day'
                                           'quals'  ("['Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-4', "
 "'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-2']")
                                      'lastfmtags'  "['instrumental', 'post rock', 'experimental', 'ambient']"
                                     'discogstags'  "['post rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '121.774'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'How Strange, Innocence'
'TBPM' (BPM (beats per minute))                     '121.774'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Remember Me As A Time Of Day'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Explosions In The Sky'
'TRCK' (Track number/Position in set)               '07'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['post rock', 'rock']
'TXXX:lastfmtags'                                   ['instrumental', 'post rock', 'experimental', 'ambient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.21 dB'
'TXXX:replaygain_track_peak'                        '0.478020'

========================== row from database ==========================
                                              'id'  1339968
                                            'path'  /data/Music/Bulk/00poprockelectronic/Explosions in the Sky/Explosions In The Sky/How Strange, Innocence/07 - explosions in the sky - remember me as a time of day.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  327
                                           'genre'  rock-unsorted
                                        'filesize'  7851904
                                           'mtime'  1620389592
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic in the 07 explosions in the sky remember as time of day rock unsorted
                                      'tag_artist'  Explosions In The Sky
                                     'tag_release'  How Strange, Innocence
                                       'tag_title'  Remember Me As A Time Of Day
                                             'bpm'  121.774
                                    'search_title'  'a':4 'as':3 'day':7 'me':2 'of':6 'remember':1 'time':5
                                   'search_artist'  'explosions':1 'in':2 'sky':4 'the':3
                                  'search_release'  'how':1 'innocence':4 'strange':2,3
                                     'search_rest'  '00poprockelectronic':1 'as':7 'day':10 'explosions':4 'in':2 'of':9 'remember':6 'rock':11 'sky':5 'the':3 'time':8 'unsorted':12
                                    'search_combo'  '00poprockelectronic':16 'a':4A 'as':3A,22 'day':7A,25 'explosions':8B,19 'how':12C 'in':9B,17 'innocence':15C 'me':2A 'of':6A,24 'remember':1A,21 'rock':26 'sky':11B,20 'strange':13C,14C 'the':10B,18 'time':5A,23 'unsorted':27
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-4', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'post rock', 'experimental', 'ambient']
                                        'tag_date'  2000
                                     'discogstags'  ['post rock', 'rock']

============================== file details ==============================
                                           'mtime'  1620389591.8139968  (2021-05-07 14:13:11)
                             'size'  7851904