======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '427'
                                          'artist'  'Laurent Garnier'
                                     'text_people'  ''
                                         'release'  'maleta  acid rave'
                                           'title'  "Astral Dreams (Carl Cox's Mmr Mix)"
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'Q-GRIT-3', 'q-bass-4', 'q-drums-4', 'q-other-1', 'q-piano-1', "
 "'q-vocals-1', 'Q-SYN-4', 'Q-BUSY-3', 'Q-PLAY-2', 'Q-CHART-2', 'Q-MIXBEAT-3']")
                                      'lastfmtags'  "['trance', 'trap', 'techno', 'drum and bass', 'rave']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-acid'
                                             'bpm'  '139.9'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'maleta  acid rave'
'TBPM' (BPM (beats per minute))                     '139.9'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-acid'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         "Astral Dreams (Carl Cox's Mmr Mix)"
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Laurent Garnier'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf57.19.100'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '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-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '4'
'TXXX:Q-UNU'                                        '1'
'TXXX:compatible_brands'                            'Iso6mp41'
'TXXX:lastfmtags'                                   ['trance', 'trap', 'techno', 'drum and bass', 'rave']
'TXXX:major_brand'                                  'Dash'
'TXXX:minor_version'                                '0'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.32 dB'
'TXXX:replaygain_track_peak'                        '0.634395'

========================== row from database ==========================
                                              'id'  1514785
                                            'path'  /data/Music/Bulk/00poprockelectronic/maleta__ acid rave/laurent garnier - astral dreams (carl cox_s mmr mix).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  427
                                           'genre'  electronic-th-techno-acid
                                        'filesize'  10274126
                                           'mtime'  1620573781
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic maleta__ laurent garnier astral dreams (carl cox_s mmr mix) electronic th techno
                                      'tag_artist'  Laurent Garnier
                                     'tag_release'  maleta  acid rave
                                       'tag_title'  Astral Dreams (Carl Cox's Mmr Mix)
                                             'bpm'  139.9
                                    'search_title'  'astral':1 'carl':3,4 'cox':5 'coxs':7 'dreams':2 'mix':9,10 'mmr':8 's':6
                                   'search_artist'  'garnier':2 'laurent':1
                                  'search_release'  'acid':2 'maleta':1 'rave':3
                                     'search_rest'  '00poprockelectronic':1 'astral':5 'carl':7,8 'cox':9 'dreams':6 'electronic':14 'garnier':4 'laurent':3 'maleta':2 'mix':12,13 'mmr':11 's':10 'techno':16 'th':15
                                    'search_combo'  '00poprockelectronic':16 'acid':14C 'astral':1A,20 'carl':3A,4A,22,23 'cox':5A,24 'coxs':7A 'dreams':2A,21 'electronic':29 'garnier':12B,19 'laurent':11B,18 'maleta':13C,17 'mix':9A,10A,27,28 'mmr':8A,26 'rave':15C 's':6A,25 'techno':31 'th':30
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-3', 'Q-OLDST-3', 'Q-GRIT-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-4', 'Q-SYN-4', 'q-other-1', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-4']
                                      'lastfmtags'  ['trance', 'trap', 'techno', 'drum and bass', 'rave']
                                        'tag_date'  2001
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620573780.745721  (2021-05-09 17:23:00)
                             'size'  10274126