======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '115'
                                          'artist'  'Magic Sam'
                                     'text_people'  ''
                                         'release'  'Twisted Tales From The Vinyl Wastelands Vol. 13 - Home on Alcatraz'
                                           'title'  '21 Days In Jail'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['blues', 'chicago blues', 'electric blues', 'rhythm and blues', 'classic "
 "blues']")
                                     'discogstags'  "['blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'rock-pop-early'
                                             'bpm'  '132.185'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Twisted Tales From The Vinyl Wastelands Vol. 13 - Home on Alcatraz'
'TBPM' (BPM (beats per minute))                     '132.185'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         '21 Days In Jail'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Magic Sam'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'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'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'blues'
'TXXX:lastfmtags'                                   ['blues',
 'chicago blues',
 'electric blues',
 'rhythm and blues',
 'classic blues']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.32 dB'
'TXXX:replaygain_track_peak'                        '0.427160'

========================== row from database ==========================
                                              'id'  947281
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/va - Twisted Tales From The Vinyl Wastelands Vol. 13 - Home on Alcatraz/15 Magic Slim - 21 Days In Jail.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  115
                                           'genre'  rock-pop-early
                                        'filesize'  4625974
                                           'mtime'  1620736837
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country va 15 Slim rock pop early
                                      'tag_artist'  Magic Sam
                                     'tag_release'  Twisted Tales From The Vinyl Wastelands Vol. 13 - Home on Alcatraz
                                       'tag_title'  21 Days In Jail
                                             'bpm'  132.185
                                    'search_title'  '21':1 'days':2 'in':3 'jail':4
                                   'search_artist'  'magic':1 'sam':2
                                  'search_release'  'alcatraz':11 'from':3 'home':9 'on':10 'tales':2 'the':4 'twisted':1 'vinyl':5 'vol':7,8 'wastelands':6
                                     'search_rest'  'country':4 'early':9 'exotica':2 'jazz':1 'oldies':3 'pop':8 'rock':7 'slim':6 'va':5
                                    'search_combo'  '21':1A 'alcatraz':17C 'country':21 'days':2A 'early':26 'exotica':19 'from':9C 'home':15C 'in':3A 'jail':4A 'jazz':18 'magic':5B 'oldies':20 'on':16C 'pop':25 'rock':24 'sam':6B 'slim':23 'tales':8C 'the':10C 'twisted':7C 'va':22 'vinyl':11C 'vol':13C,14C 'wastelands':12C
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'chicago blues', 'electric blues', 'rhythm and blues', 'classic blues']
                                        'tag_date'  1955
                                     'discogstags'  ['blues']

============================== file details ==============================
                                           'mtime'  1620736837.0167456  (2021-05-11 14:40:37)
                             'size'  4625974