======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '104'
                                          'artist'  'Jon Thomas '
                                     'text_people'  ''
                                         'release'  'Slow Grind Fever Vol. 6 (2016, Stag-O-Lee)'
                                           'title'  'Hard Head Pt.1'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', "
 "'q-grit-2', 'q-play-3', 'Q-OLDST-1', 'q-chart-1', 'q-drums-4', 'q-other-4', "
 "'q-piano-1', 'q-vocals-2', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['future house', 'house', '60s', 'hands up', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  '14'
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'rock-pop-early'
                                             'bpm'  '95.169'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Slow Grind Fever Vol. 6 (2016, Stag-O-Lee)'
'TBPM' (BPM (beats per minute))                     '95.169'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         'Hard Head Pt.1'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jon Thomas '
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '14/14'
'TSOA' (Album sort order)                           'Slow Grind Fever Vol. 6 (2016, Stag-O-Lee)'
'TSOP' (Performer sort order)                       'Jon Thomas '
'TSOT' (Title sort order)                           'Hard Head Pt.1'
'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:lastfmtags'                                   ['future house', 'house', '60s', 'hands up', 'electronic']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.27 dB'
'TXXX:replaygain_track_peak'                        '0.450334'

========================== row from database ==========================
                                              'id'  948523
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/va - Slow Grind Fever Vol. 6 (2016, Stag-O-Lee)/B7 - Jon Thomas - Hard Head Pt.1.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  104
                                           'genre'  rock-pop-early
                                        'filesize'  4293108
                                           'mtime'  1620736706
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country va B7 rock pop early
                                      'tag_artist'  Jon Thomas 
                                     'tag_release'  Slow Grind Fever Vol. 6 (2016, Stag-O-Lee)
                                       'tag_title'  Hard Head Pt.1
                                             'bpm'  95.169
                                    'search_title'  '1':4 'hard':1 'head':2 'pt':3 'pt1':5
                                   'search_artist'  'jon':1 'thomas':2
                                  'search_release'  '2016':7,8 '6':6 'fever':3 'grind':2 'lee':11 'o':10 'slow':1 'stag':9 'stagolee':12 'vol':4,5
                                     'search_rest'  'b7':6 'country':4 'early':9 'exotica':2 'jazz':1 'oldies':3 'pop':8 'rock':7 'va':5
                                    'search_combo'  '1':4A '2016':14C,15C '6':13C 'b7':25 'country':23 'early':28 'exotica':21 'fever':10C 'grind':9C 'hard':1A 'head':2A 'jazz':20 'jon':6B 'lee':18C 'o':17C 'oldies':22 'pop':27 'pt':3A 'pt1':5A 'rock':26 'slow':8C 'stag':16C 'stagolee':19C 'thomas':7B 'va':24 'vol':11C,12C
                                    'tag_tracknum'  14
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['future house', 'house', '60s', 'hands up', 'electronic']
                                        'tag_date'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736706.0673184  (2021-05-11 14:38:26)
                             'size'  4293108