======================== unified (from filesystem) ========================
                                         'bitrate'  '156.948'
                                        'duration'  '150'
                                          'artist'  'Schwump'
                                     'text_people'  ''
                                         'release'  'Kick In The Butt'
                                           'title'  'Root Beer'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['insects', 'avant garde', 'outsider']"
                                     'discogstags'  "['rock', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '127.5'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Kick In The Butt'
'TBPM' (BPM (beats per minute))                     '127.5'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Root Beer'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Schwump'
'TPE2' (Band/orchestra/accompaniment)               'Schwump'
'TPUB' (Publisher)                                  'Schwump'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['rock', 'experimental']
'TXXX:lastfmtags'                                   ['insects', 'avant garde', 'outsider']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.52 dB'
'TXXX:replaygain_track_peak'                        '0.451363'

========================== row from database ==========================
                                              'id'  855531
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/schwump kick in the butt/06. root beer.mp3
                                         'working'  None
                                         'bitrate'  157
                                    'duration_sec'  150
                                           'genre'  electronic-experimental
                                        'filesize'  2959496
                                           'mtime'  1621854345
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm schwump kick in the butt 06. root beer electronic experimental
                                      'tag_artist'  Schwump
                                     'tag_release'  Kick In The Butt
                                       'tag_title'  Root Beer
                                             'bpm'  127.5
                                    'search_title'  'beer':2 'root':1
                                   'search_artist'  'schwump':1
                                  'search_release'  'butt':4 'in':2 'kick':1 'the':3
                                     'search_rest'  '06':6,7 'beer':9 'butt':5 'electronic':10 'experimental':11 'in':3 'kick':2 'root':8 'schwump':1 'the':4
                                    'search_combo'  '06':13,14 'beer':2A,16 'butt':7C,12 'electronic':17 'experimental':18 'in':5C,10 'kick':4C,9 'root':1A,15 'schwump':3B,8 'the':6C,11
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['insects', 'avant garde', 'outsider']
                                        'tag_date'  1999
                                     'discogstags'  ['rock', 'experimental']

============================== file details ==============================
                                           'mtime'  1621854345.418471  (2021-05-24 13:05:45)
                             'size'  2959496