======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '268'
                                          'artist'  'The Verve Pipe'
                                     'text_people'  ''
                                         'release'  '100 Greatest Rock Songs Of The 90s'
                                           'title'  'The Freshmen'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['alternative rock', '90s', 'alternative', 'indie', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '70'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'rock-pop;set-pl-billboard'
                                             'bpm'  '99.812'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '100 Greatest Rock Songs Of The 90s'
'TBPM' (BPM (beats per minute))                     '99.812'
'TCON' (Content type, a.k.a. Genre)                 ['rock-pop', 'set-pl-billboard']
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'The Freshmen'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Verve Pipe'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '70'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['alternative rock', '90s', 'alternative', 'indie', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.08 dB'
'TXXX:replaygain_track_peak'                        '0.632827'

========================== row from database ==========================
                                              'id'  1289982
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/70-The_Verve_Pipe-The_Freshmen.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  268
                                           'genre'  rock-pop;set-pl-billboard
                                        'filesize'  6456012
                                           'mtime'  1620389179
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 70 The_Verve_Pipe The_Freshmen rock pop;set pl billboard
                                      'tag_artist'  The Verve Pipe
                                     'tag_release'  100 Greatest Rock Songs Of The 90s
                                       'tag_title'  The Freshmen
                                             'bpm'  99.812
                                    'search_title'  'freshmen':2 'the':1
                                   'search_artist'  'pipe':3 'the':1 'verve':2
                                  'search_release'  '100':1 '90s':7 'greatest':2 'of':5 'rock':3 'songs':4 'the':6
                                     'search_rest'  '00poprockelectronic':1 '70':2 'billboard':14 'freshmen':7 'pipe':5 'pl':13 'pop':9,11 'rock':8 'set':10,12 'the':3,6 'verve':4
                                    'search_combo'  '00poprockelectronic':13 '100':6C '70':14 '90s':12C 'billboard':26 'freshmen':2A,19 'greatest':7C 'of':10C 'pipe':5B,17 'pl':25 'pop':21,23 'rock':8C,20 'set':22,24 'songs':9C 'the':1A,3B,11C,15,18 'verve':4B,16
                                    'tag_tracknum'  70
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['alternative rock', '90s', 'alternative', 'indie', 'rock']
                                        'tag_date'  1997
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620389178.8365319  (2021-05-07 14:06:18)
                             'size'  6456012