======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '493'
                                          'artist'  'Randy Katana'
                                     'text_people'  ''
                                         'release'  'maleta  acid rave'
                                           'title'  'Erotmania (Hardfloor Remix)'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-GRIT-3', 'q-bass-4', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'Q-SYN-4', 'Q-BUSY-3', 'Q-PLAY-2', 'Q-CHART-2', "
 "'Q-MIXBEAT-3']")
                                      'lastfmtags'  "['trance', 'hard trance', 'electronic', 'tech-trance', 'dance']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-acid'
                                             'bpm'  '131.0'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'maleta  acid rave'
'TBPM' (BPM (beats per minute))                     '131.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-acid'
'TDRC' (Recording time)                             '1994'
'TIT2' (Title/songname/content description)         'Erotmania (Hardfloor Remix)'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Randy Katana'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'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:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['trance', 'hard trance', 'electronic', 'tech-trance', 'dance']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.31 dB'
'TXXX:replaygain_track_peak'                        '0.543953'

========================== row from database ==========================
                                              'id'  1485190
                                            'path'  /data/Music/Bulk/00poprockelectronic/maleta__ acid rave/randy katana - erotmania (hardfloor remix).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  493
                                           'genre'  electronic-th-techno-acid
                                        'filesize'  19749712
                                           'mtime'  1620573810
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic maleta__ randy katana erotmania (hardfloor remix) electronic th techno
                                      'tag_artist'  Randy Katana
                                     'tag_release'  maleta  acid rave
                                       'tag_title'  Erotmania (Hardfloor Remix)
                                             'bpm'  131.0
                                    'search_title'  'erotmania':1 'hardfloor':2,3 'remix':4,5
                                   'search_artist'  'katana':2 'randy':1
                                  'search_release'  'acid':2 'maleta':1 'rave':3
                                     'search_rest'  '00poprockelectronic':1 'electronic':10 'erotmania':5 'hardfloor':6,7 'katana':4 'maleta':2 'randy':3 'remix':8,9 'techno':12 'th':11
                                    'search_combo'  '00poprockelectronic':11 'acid':9C 'electronic':20 'erotmania':1A,15 'hardfloor':2A,3A,16,17 'katana':7B,14 'maleta':8C,12 'randy':6B,13 'rave':10C 'remix':4A,5A,18,19 'techno':22 'th':21
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4A
                                           '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-2', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-4']
                                      'lastfmtags'  ['trance', 'hard trance', 'electronic', 'tech-trance', 'dance']
                                        'tag_date'  1994
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620573810.4813192  (2021-05-09 17:23:30)
                             'size'  19749712