======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '730'
                                          'artist'  'Kraftwerk'
                                     'text_people'  ''
                                         'release'  'Kraftwerk'
                                           'title'  'Stratovarius'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['german', 'electronica', 'electro', 'electronic', 'synthpop']"
                                     'discogstags'  "['electronic', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '02'
                                      'tracktotal'  '04'
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'electronic-we-electropop or synthpop'
                                             'bpm'  '140.6'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Kraftwerk'
'TBPM' (BPM (beats per minute))                     '140.6'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-electropop or synthpop'
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'Stratovarius'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kraftwerk'
'TPE2' (Band/orchestra/accompaniment)               'Kraftwerk'
'TRCK' (Track number/Position in set)               '02/04'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'experimental']
'TXXX:lastfmtags'                                   ['german', 'electronica', 'electro', 'electronic', 'synthpop']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.25 dB'
'TXXX:replaygain_track_peak'                        '0.687106'

========================== row from database ==========================
                                              'id'  1373502
                                            'path'  /data/Music/Bulk/00poprockelectronic/1970 Kraftwerk/02 Stratovarius.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  730
                                           'genre'  electronic-we-electropop or synthpop
                                        'filesize'  29305500
                                           'mtime'  1628353786
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 1970 02 electronic electropop or synthpop
                                      'tag_artist'  Kraftwerk
                                     'tag_release'  Kraftwerk
                                       'tag_title'  Stratovarius
                                             'bpm'  140.6
                                    'search_title'  'stratovarius':1
                                   'search_artist'  'kraftwerk':1
                                  'search_release'  'kraftwerk':1
                                     'search_rest'  '00poprockelectronic':1 '1970':2 'electronic':3 'electropop':4 'or':5 'synthpop':6
                                    'search_combo'  '00poprockelectronic':4 '1970':5 'electronic':6 'electropop':7 'kraftwerk':2B,3C 'or':8 'stratovarius':1A 'synthpop':9
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-4', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['german', 'electronica', 'electro', 'electronic', 'synthpop']
                                        'tag_date'  1970
                                     'discogstags'  ['electronic', 'experimental']

============================== file details ==============================
                                           'mtime'  1628353786.3273857  (2021-08-07 18:29:46)
                             'size'  29305500