======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '504'
                                          'artist'  'Lunar Dunes'
                                     'text_people'  ''
                                         'release'  'Progsoup 48'
                                           'title'  'Free to Do'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['progressive rock', 'space rock', 'psychedelic rock', 'experimental', "
 "'psychedelic']")
                                     'discogstags'  "['space rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '52'
                                      'tracktotal'  '9'
                                            'date'  '2011'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-progspace'
                                             'bpm'  '139.754'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Progsoup 48'
'TBPM' (BPM (beats per minute))                     '139.754'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-progspace']
'TDRC' (Recording time)                             '2011'
'TIT2' (Title/songname/content description)         'Free to Do'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Lunar Dunes'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '52/9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['space rock', 'rock']
'TXXX:lastfmtags'                                   ['progressive rock',
 'space rock',
 'psychedelic rock',
 'experimental',
 'psychedelic']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.30 dB'
'TXXX:replaygain_track_peak'                        '0.430036'

========================== row from database ==========================
                                              'id'  1409233
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 48/2755 lunar dunes - free to do.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  504
                                           'genre'  rock-cppex-progressive;set-pl-progspace
                                        'filesize'  20168705
                                           'mtime'  1620737503
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP progsoup 2755 lunar dunes free do rock cppex progressive;set pl progspace
                                      'tag_artist'  Lunar Dunes
                                     'tag_release'  Progsoup 48
                                       'tag_title'  Free to Do
                                             'bpm'  139.754
                                    'search_title'  'do':3 'free':1 'to':2
                                   'search_artist'  'dunes':2 'lunar':1
                                  'search_release'  '48':2 'progsoup':1
                                     'search_rest'  '2755':3 'classicprogpsy':1 'cppex':9 'do':7 'dunes':5 'free':6 'lunar':4 'pl':14 'progressive':10,12 'progsoup':2 'progspace':15 'rock':8 'set':11,13
                                    'search_combo'  '2755':10 '48':7C 'classicprogpsy':8 'cppex':16 'do':3A,14 'dunes':5B,12 'free':1A,13 'lunar':4B,11 'pl':21 'progressive':17,19 'progsoup':6C,9 'progspace':22 'rock':15 'set':18,20 'to':2A
                                    'tag_tracknum'  52
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['progressive rock', 'space rock', 'psychedelic rock', 'experimental', 'psychedelic']
                                        'tag_date'  2011
                                     'discogstags'  ['space rock', 'rock']

============================== file details ==============================
                                           'mtime'  1620737502.6781867  (2021-05-11 14:51:42)
                             'size'  20168705