======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '172'
                                          'artist'  'Jerry Lee Lewis'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Whole Lot Of Shakin' Goin' On"
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']")
                                      'lastfmtags'  ("['oldies', 'rock n roll', 'rock and roll', 'rockabilly', '50s', 'classic "
 "rock']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '06'
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '109.586'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TBPM' (BPM (beats per minute))                     '109.586'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         "Whole Lot Of Shakin' Goin' On"
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jerry Lee Lewis'
'TPE2' (Band/orchestra/accompaniment)               'Jerry Lee Lewis'
'TRCK' (Track number/Position in set)               '06'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'rock n roll', 'rock and roll', 'rockabilly', '50s', 'classic rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.88 dB'
'TXXX:replaygain_track_peak'                        '0.544799'

========================== row from database ==========================
                                              'id'  1506675
                                            'path'  /data/Music/Bulk/00poprockelectronic/Jerry Lee Lewis/Unknown Album/06 Whole Lot Of Shakin_ Goin_ On.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  172
                                           'genre'  rock-cppex
                                        'filesize'  8173983
                                           'mtime'  1620737233
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unknown Album 06 Shakin_ Goin_ rock cppex
                                      'tag_artist'  Jerry Lee Lewis
                                     'tag_release'  None
                                       'tag_title'  Whole Lot Of Shakin' Goin' On
                                             'bpm'  109.586
                                    'search_title'  'goin':6,7 'lot':2 'of':3 'on':8 'shakin':4,5 'whole':1
                                   'search_artist'  'jerry':1 'lee':2 'lewis':3
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'album':3 'cppex':7 'goin':5 'rock':6 'shakin':4 'unknown':2
                                    'search_combo'  '00poprockelectronic':12 'album':14 'cppex':18 'goin':6A,7A,16 'jerry':9B 'lee':10B 'lewis':11B 'lot':2A 'of':3A 'on':8A 'rock':17 'shakin':4A,5A,15 'unknown':13 'whole':1A
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'rock n roll', 'rock and roll', 'rockabilly', '50s', 'classic rock']
                                        'tag_date'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737232.8584068  (2021-05-11 14:47:12)
                             'size'  8173983