======================== unified (from filesystem) ========================
                                         'bitrate'  '192.008'
                                        'duration'  '151'
                                          'artist'  'Macy Skipper'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Bop Pills (gl. 0.47)'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['rockabilly', 'rock and roll', 'oldies', '60s', 'rock n roll']"
                                     'discogstags'  "['rockabilly', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-pl-spelling'
                                             'bpm'  '86.548'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '86.548'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-spelling'
'TENC' (Encoded by)                                 'Amadeus II'
'TIT2' (Title/songname/content description)         'Bop Pills (gl. 0.47)'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Macy Skipper'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rockabilly', 'rock']
'TXXX:lastfmtags'                                   ['rockabilly', 'rock and roll', 'oldies', '60s', 'rock n roll']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'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'                        '+1.65 dB'
'TXXX:replaygain_track_peak'                        '0.555863'

========================== row from database ==========================
                                              'id'  764692
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/spelling/Macy Skipper - Bop Pills (gl. 0.47).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  151
                                           'genre'  set-pl-spelling
                                        'filesize'  3637821
                                           'mtime'  1620356378
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes spelling set pl spelling
                                      'tag_artist'  Macy Skipper
                                     'tag_release'  None
                                       'tag_title'  Bop Pills (gl. 0.47)
                                             'bpm'  86.548
                                    'search_title'  '0':5 '047':7 '47':6 'bop':1 'gl':3,4 'pills':2
                                   'search_artist'  'macy':1 'skipper':2
                                  'search_release'  
                                     'search_rest'  '0novelty':2 '0playlists':1 'pl':6 'set':5 'spelling':4 'themes':3
                                    'search_combo'  '0':5A '047':7A '0novelty':11 '0playlists':10 '47':6A 'bop':1A 'gl':3A,4A 'macy':8B 'pills':2A 'pl':15 'set':14 'skipper':9B 'spelling':13 'themes':12
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['rockabilly', 'rock and roll', 'oldies', '60s', 'rock n roll']
                                        'tag_date'  
                                     'discogstags'  ['rockabilly', 'rock']

============================== file details ==============================
                                           'mtime'  1620356377.8080964  (2021-05-07 04:59:37)
                             'size'  3637821