======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '151'
                                          'artist'  'The Spotlights'
                                     'text_people'  ''
                                         'release'  'no title'
                                           'title'  'Little Things'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['iron leg']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '1967'
                                        'comments'  ''
                                           'genre'  'rock-pop-surf'
                                             'bpm'  '132.4'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'MCDI' (Music CD identifier)                        MCDI(data=b'1\x00C\x00+\x009\x006\x00+\x002\x00D\x00D\x006\x00+\x005\x003\x00E\x00A\x00+\x008\x006\x00F\x00A\x00+\x00A\x008\x00E\x002\x00+\x00D\x007\x00A\x006\x00+\x00F\x00D\x000\x009\x00+\x001\x002\x008\x00A\x00F\x00+\x001\x005\x007\x009\x000\x00+\x001\x008\x005\x00C\x005\x00+\x001\x00B\x004\x003\x008\x00+\x001\x00D\x006\x008\x001\x00+\x002\x000\x00E\x005\x009\x00+\x002\x002\x00C\x008\x009\x00+\x002\x004\x00D\x00E\x00E\x00+\x002\x007\x00A\x004\x007\x00+\x002\x009\x00E\x003\x00D\x00+\x002\x00D\x00A\x007\x001\x00+\x003\x000\x005\x006\x005\x00+\x003\x003\x00E\x005\x00E\x00+\x003\x006\x002\x002\x003\x00+\x003\x009\x001\x000\x006\x00+\x003\x00B\x00D\x003\x008\x00+\x003\x00E\x007\x00F\x003\x00+\x004\x001\x00E\x00F\x006\x00+\x004\x004\x00C\x00E\x008\x00+\x004\x007\x009\x005\x008\x00+\x004\x00A\x006\x007\x006\x00+\x004\x00C\x00D\x007\x00F\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'no title'
'TBPM' (BPM (beats per minute))                     '132.4'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-surf'
'TDRC' (Recording time)                             '1967'
'TIT2' (Title/songname/content description)         'Little Things'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Spotlights'
'TRCK' (Track number/Position in set)               '15'
'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'
'TXXX:lastfmtags'                                   'iron leg'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.18 dB'
'TXXX:replaygain_track_peak'                        '0.482445'

========================== row from database ==========================
                                              'id'  443583
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/The Spotnicks-1962-1990-23 cd/The Spotnicks-1967-In Acapulco/01 Little Things.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  151
                                           'genre'  rock-pop-surf
                                        'filesize'  2424832
                                           'mtime'  1620736683
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Spotnicks 1962 1990 23 cd Spotnicks 1967 In Acapulco 01 rock pop surf
                                      'tag_artist'  The Spotlights
                                     'tag_release'  no title
                                       'tag_title'  Little Things
                                             'bpm'  132.4
                                    'search_title'  'little':1 'things':2
                                   'search_artist'  'spotlights':2 'the':1
                                  'search_release'  'no':1 'title':2
                                     'search_rest'  '1962':2 '1967':6 '1990':3 '23':4 'acapulco':8 'cd':5 'in':7 'pop':10 'rock':9 'spotnicks':1 'surf':11
                                    'search_combo'  '1962':8 '1967':12 '1990':9 '23':10 'acapulco':14 'cd':11 'in':13 'little':1A 'no':5C 'pop':16 'rock':15 'spotlights':4B 'spotnicks':7 'surf':17 'the':3B 'things':2A 'title':6C
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['iron leg']
                                        'tag_date'  1967
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620736683.3641562  (2021-05-11 14:38:03)
                             'size'  2424832