======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '165'
                                          'artist'  'Ron & Joe'
                                     'text_people'  ''
                                         'release'  "Desperate Rock'N'Roll Vol. 14"
                                           'title'  'Riot In Cell Block No 9'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-syn-2', 'q-bass-2', "
 "'q-busy-2', 'q-grit-2', 'q-play-3', 'q-chart-2', 'q-drums-1', 'q-other-3', "
 "'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-2', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['rock n roll', '50s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rocknroll'
                                             'bpm'  '105.7'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     "Desperate Rock'N'Roll Vol. 14"
'TBPM' (BPM (beats per minute))                     '105.7'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rocknroll'
'TIT2' (Title/songname/content description)         'Riot In Cell Block No 9'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Ron & Joe'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '03'
'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'                                   ['rock n roll', '50s']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.28 dB'
'TXXX:replaygain_track_peak'                        '0.391410'

========================== row from database ==========================
                                              'id'  1531707
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/va - Desperate Rock_N_Roll Vol. 14/A3 - Ron & Joe - Riot In Cell Block No. 9.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  165
                                           'genre'  rock-pop-early-rocknroll
                                        'filesize'  2801958
                                           'mtime'  1622659490
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm va Rock_N_Roll A3 No. rock pop early rocknroll
                                      'tag_artist'  Ron & Joe
                                     'tag_release'  Desperate Rock'N'Roll Vol. 14
                                       'tag_title'  Riot In Cell Block No 9
                                             'bpm'  105.7
                                    'search_title'  '9':6 'block':4 'cell':3 'in':2 'no':5 'riot':1
                                   'search_artist'  'joe':2 'ron':1
                                  'search_release'  'desperate':1 'n':3 'rock':2 'rocknroll':5 'roll':4 'vol':6,7
                                     'search_rest'  'a3':5 'early':10 'n':3 'no':6,7 'pop':9 'rock':2,8 'rocknroll':11 'roll':4 'va':1
                                    'search_combo'  '9':6A 'a3':20 'block':4A 'cell':3A 'desperate':9C 'early':25 'in':2A 'joe':8B 'n':11C,18 'no':5A,21,22 'pop':24 'riot':1A 'rock':10C,17,23 'rocknroll':13C,26 'roll':12C,19 'ron':7B 'va':16 'vol':14C,15C
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['rock n roll', '50s']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622659489.9555712  (2021-06-02 20:44:49)
                             'size'  2801958