======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '254'
                                          'artist'  'Ambrosia'
                                     'text_people'  ''
                                         'release'  'progsoup 2'
                                           'title'  "Holdin' On To Yesterday"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['soft rock', '70s', 'progressive rock', 'rock', 'classic rock']"
                                     'discogstags'  "['house', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1978'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '141.809'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '20th Century Records'
'COMM:ID3v1 Comment:XXX'                            '20th Century Records'
'TALB' (Album/Movie/Show title)                     'progsoup 2'
'TBPM' (BPM (beats per minute))                     '141.809'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDRC' (Recording time)                             '1978'
'TIT2' (Title/songname/content description)         "Holdin' On To Yesterday"
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ambrosia'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'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'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['house', 'electronic']
'TXXX:lastfmtags'                                   ['soft rock', '70s', 'progressive rock', 'rock', 'classic rock']
'TXXX:q-bass'                                       '3'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.47 dB'
'TXXX:replaygain_track_peak'                        '0.552084'

========================== row from database ==========================
                                              'id'  1511320
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup2/080 ambrosia - Holdin_ On To Yesterday.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  254
                                           'genre'  rock-cppex-progressive
                                        'filesize'  6118760
                                           'mtime'  1620737640
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP progsoup2 080 ambrosia Holdin_ rock cppex progressive
                                      'tag_artist'  Ambrosia
                                     'tag_release'  progsoup 2
                                       'tag_title'  Holdin' On To Yesterday
                                             'bpm'  141.809
                                    'search_title'  'holdin':1,2 'on':3 'to':4 'yesterday':5
                                   'search_artist'  'ambrosia':1
                                  'search_release'  '2':2 'progsoup':1
                                     'search_rest'  'ambrosia':4 'classicprogpsy':1 'cppex':7 'holdin':5 'progressive':8 'progsoup':2 'progsoup2':3 'rock':6
                                    'search_combo'  '2':8C 'ambrosia':6B,12 'classicprogpsy':9 'cppex':15 'holdin':1A,2A,13 'on':3A 'progressive':16 'progsoup':7C,10 'progsoup2':11 'rock':14 'to':4A 'yesterday':5A
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-3', 'q-grit-2']
                                      'lastfmtags'  ['soft rock', '70s', 'progressive rock', 'rock', 'classic rock']
                                        'tag_date'  1978
                                     'discogstags'  ['house', 'electronic']

============================== file details ==============================
                                           'mtime'  1620737640.4197376  (2021-05-11 14:54:00)
                             'size'  6118760