======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '800'
                                          'artist'  'J. Peter Robinson'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Firestorm'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', "
 "'q-play-2', 'Q-OLDST-3', 'q-chart-1', 'q-drums-4', 'q-other-4', 'q-piano-1', "
 "'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['soundtrack', 'instrumental', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '145.7'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '145.7'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'Firestorm'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'J. Peter Robinson'
'TXXX:Mp3gain_minmax'                               '067,186'
'TXXX:Mp3gain_undo'                                 '+006,+006,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['soundtrack', 'instrumental', 'rock']
'TXXX:other'                                        '506'
'TXXX:q-bass'                                       '2'
'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'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.18 dB'
'TXXX:replaygain_track_peak'                        '0.374526'

========================== row from database ==========================
                                              'id'  1378519
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/J. Peter Robinson - CD5/506 - Firestorm (1998) J. Peter Robinson (Suite).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  800
                                           'genre'  electronic-unsorted
                                        'filesize'  32010672
                                           'mtime'  1620538557
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm CD5 506 (1998) (Suite) electronic unsorted
                                      'tag_artist'  J. Peter Robinson
                                     'tag_release'  None
                                       'tag_title'  Firestorm
                                             'bpm'  145.7
                                    'search_title'  'firestorm':1
                                   'search_artist'  'j':1,2 'peter':3 'robinson':4
                                  'search_release'  
                                     'search_rest'  '1998':3,4 '506':2 'cd5':1 'electronic':7 'suite':5,6 'unsorted':8
                                    'search_combo'  '1998':8,9 '506':7 'cd5':6 'electronic':12 'firestorm':1A 'j':2B,3B 'peter':4B 'robinson':5B 'suite':10,11 'unsorted':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-4', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['soundtrack', 'instrumental', 'rock']
                                        'tag_date'  1998
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620538556.5222285  (2021-05-09 07:35:56)
                             'size'  32010672