======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '301'
                                          'artist'  'Love 4 Sale'
                                     'text_people'  ''
                                         'release'  'Dark Techno'
                                           'title'  'Fragile (Esoteric Mix)'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-4', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-4']")
                                      'lastfmtags'  "['trance', 'electronic', 'eurodance', 'dance', 'old skool']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno'
                                             'bpm'  '126.885'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Dark Techno'
'TBPM' (BPM (beats per minute))                     '126.885'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno'
'TDRC' (Recording time)                             '1992'
'TIT2' (Title/songname/content description)         'Fragile (Esoteric Mix)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Love 4 Sale'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'LED Records'
'TXXX:COUNTRY'                                      'Italy'
'TXXX:DISCOGS_CATALOG'                              'LED 2012'
'TXXX:DISCOGS_FORMAT'                               'Vinyl, 12", , "45 RPM", 45 RPM, '
'TXXX:DISCOGS_MASTER_RELEASE_ID'                    '132087'
'TXXX:DISCOGS_RELEASE_ID'                           '436994'
'TXXX:GENRE_X'                                      'Electronic'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['trance', 'electronic', 'eurodance', 'dance', 'old skool']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.79 dB'
'TXXX:replaygain_track_peak'                        '0.682478'

========================== row from database ==========================
                                              'id'  1285528
                                            'path'  /data/Music/Bulk/00poprockelectronic/Dark - Techno/Love 4 Sale - Fragile (Esoteric Mix) ss.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  301
                                           'genre'  electronic-th-techno
                                        'filesize'  12237896
                                           'mtime'  1620568867
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic ss electronic th techno
                                      'tag_artist'  Love 4 Sale
                                     'tag_release'  Dark Techno
                                       'tag_title'  Fragile (Esoteric Mix)
                                             'bpm'  126.885
                                    'search_title'  'esoteric':2,3 'fragile':1 'mix':4,5
                                   'search_artist'  '4':2 'love':1 'sale':3
                                  'search_release'  'dark':1 'techno':2
                                     'search_rest'  '00poprockelectronic':1 'electronic':3 'ss':2 'techno':5 'th':4
                                    'search_combo'  '00poprockelectronic':11 '4':7B 'dark':9C 'electronic':13 'esoteric':2A,3A 'fragile':1A 'love':6B 'mix':4A,5A 'sale':8B 'ss':12 'techno':10C,15 'th':14
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-4', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-4', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['trance', 'electronic', 'eurodance', 'dance', 'old skool']
                                        'tag_date'  1992
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620568866.703085  (2021-05-09 16:01:06)
                             'size'  12237896