======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '209'
                                          'artist'  'Nevada'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'The Mack'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['eurodance', 'trance', 'dance', 'post-hardcore', 'brazilian']"
                                     'discogstags'  "['trance', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2016'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '105.863'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TBPM' (BPM (beats per minute))                     '105.863'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2016'
'TIT2' (Title/songname/content description)         'The Mack'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nevada feat. Mark Morrison & Fetty Wap'
'TPE2' (Band/orchestra/accompaniment)               'Nevada'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['trance', 'electronic']
'TXXX:lastfmtags'                                   ['eurodance', 'trance', 'dance', 'post-hardcore', 'brazilian']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.29 dB'
'TXXX:replaygain_track_peak'                        '0.386493'

========================== row from database ==========================
                                              'id'  1314085
                                            'path'  /data/Music/Bulk/00poprockelectronic/2016/Nevada feat. Mark Morrison & Fetty Wap - The Mack.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  209
                                           'genre'  electronic-unsorted
                                        'filesize'  8767909
                                           'mtime'  1621696008
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 2016 feat. Mark Morrison & Fetty Wap electronic unsorted
                                      'tag_artist'  Nevada
                                     'tag_release'  None
                                       'tag_title'  The Mack
                                             'bpm'  105.863
                                    'search_title'  'mack':2 'the':1
                                   'search_artist'  'nevada':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '2016':2 'electronic':9 'feat':3,4 'fetty':7 'mark':5 'morrison':6 'unsorted':10 'wap':8
                                    'search_combo'  '00poprockelectronic':4 '2016':5 'electronic':12 'feat':6,7 'fetty':10 'mack':2A 'mark':8 'morrison':9 'nevada':3B 'the':1A 'unsorted':13 'wap':11
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['eurodance', 'trance', 'dance', 'post-hardcore', 'brazilian']
                                        'tag_date'  2016
                                     'discogstags'  ['trance', 'electronic']

============================== file details ==============================
                                           'mtime'  1621696008.376572  (2021-05-22 17:06:48)
                             'size'  8767909