======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '472'
                                          'artist'  'Eagles & Butterflies'
                                     'text_people'  ''
                                         'release'  'AlbertFM'
                                           'title'  'The Last Dance (Sunrise Mix)'
                                           'quals'  ("['Q-MIXBEAT-3', 'Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'Q-OLDST-3', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'q-play-3', 'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', "
 "'q-vocals-1']")
                                      'lastfmtags'  "['british', 'microhouse', 'deep house', 'tech house', '8 of 10 stars']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  '3'
                                            'date'  ''
                                        'comments'  'Sunrise Mix'
                                           'genre'  'electronic-th-techno-minimal or deephouse'
                                             'bpm'  '123'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::XXX'                                         (' 00000000 00000210 00000A73 00000000013DBEFD 00000000 01201F2F 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'POPM:no@email'                                     POPM(email='no@email', rating=0, count=0)
'TALB' (Album/Movie/Show title)                     'AlbertFM'
'TBPM' (BPM (beats per minute))                     '123'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-minimal or deephouse'
'TENC' (Encoded by)                                 'iTunes 12.5.3.17'
'TIT2' (Title/songname/content description)         'The Last Dance (Sunrise Mix)'
'TIT3' (Subtitle/Description refinement)            'Sunrise Mix'
'TKEY' (Initial key)                                '6B'
'TLEN' (Length)                                     '472268'
'TPE1' (Lead performer(s)/Soloist(s))               'Eagles & Butterflies'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '/3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['british', 'microhouse', 'deep house', 'tech house', '8 of 10 stars']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.75 dB'
'TXXX:replaygain_track_peak'                        '0.398006'

========================== row from database ==========================
                                              'id'  1308861
                                            'path'  /data/Music/Bulk/00poprockelectronic/00techno-house-harder-beats/Varis - C_201x Techno melodic/Eagles & Butterflies - The Last Dance (Sunrise Mix).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  472
                                           'genre'  electronic-th-techno-minimal or deephouse
                                        'filesize'  18952192
                                           'mtime'  1621085202
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00techno house harder beats Varis C_201x Techno melodic electronic th techno minimal or deephouse
                                      'tag_artist'  Eagles & Butterflies
                                     'tag_release'  AlbertFM
                                       'tag_title'  The Last Dance (Sunrise Mix)
                                             'bpm'  123.0
                                    'search_title'  'dance':3 'last':2 'mix':6,7 'sunrise':4,5 'the':1
                                   'search_artist'  'butterflies':2 'eagles':1
                                  'search_release'  'albert':2 'albertfm':1 'fm':3
                                     'search_rest'  '00poprockelectronic':1 '00techno':2 '201x':8 'beats':5 'c':7 'deephouse':15 'electronic':11 'harder':4 'house':3 'melodic':10 'minimal':13 'or':14 'techno':9 'th':12 'varis':6
                                    'search_combo'  '00poprockelectronic':13 '00techno':14 '201x':20 'albert':11C 'albertfm':10C 'beats':17 'butterflies':9B 'c':19 'dance':3A 'deephouse':27 'eagles':8B 'electronic':23 'fm':12C 'harder':16 'house':15 'last':2A 'melodic':22 'minimal':25 'mix':6A,7A 'or':26 'sunrise':4A,5A 'techno':21 'th':24 'the':1A 'varis':18
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', '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-2', 'q-other-2', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['british', 'microhouse', 'deep house', 'tech house', '8 of 10 stars']
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621085201.6104155  (2021-05-15 15:26:41)
                             'size'  18952192