======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '519'
                                          'artist'  'Solar Quest'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Acid Baba - a + b = c in d'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-4', 'q-syn-4', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-4']")
                                      'lastfmtags'  "['psychill', 'acid', 'electronic', 'chillout', 'ambient']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-th-trance-goa or psy'
                                             'bpm'  '143.925'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '143.925'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-trance-goa or psy'
'TIT2' (Title/songname/content description)         'Acid Baba - a + b = c in d'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Solar Quest'
'TXXX:Mp3gain_minmax'                               '066,186'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '4'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['psychill', 'acid', 'electronic', 'chillout', 'ambient']
'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'                                       '2'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.17 dB'
'TXXX:replaygain_track_peak'                        '0.618641'

========================== row from database ==========================
                                              'id'  1403800
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Solar Quest/Solar Quest - Acid Baba - a + b = c in d.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  519
                                           'genre'  electronic-th-trance-goa or psy
                                        'filesize'  8311523
                                           'mtime'  1620592943
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat electronic th trance goa or psy
                                      'tag_artist'  Solar Quest
                                     'tag_release'  None
                                       'tag_title'  Acid Baba - a + b = c in d
                                             'bpm'  143.925
                                    'search_title'  'a':3 'acid':1 'b':4 'baba':2 'c':5 'd':7 'in':6
                                   'search_artist'  'quest':2 'solar':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'dance':3 'electronic':5 'generic':2 'goa':8 'or':9 'psy':10 'th':6 'trance':7 'trapbeat':4
                                    'search_combo'  '00poprockelectronic':10 'a':3A 'acid':1A 'b':4A 'baba':2A 'c':5A 'd':7A 'dance':12 'electronic':14 'generic':11 'goa':17 'in':6A 'or':18 'psy':19 'quest':9B 'solar':8B 'th':15 'trance':16 'trapbeat':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-4', 'q-play-2', 'Q-OLDST-4', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-4', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['psychill', 'acid', 'electronic', 'chillout', 'ambient']
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620592942.9909184  (2021-05-09 22:42:22)
                             'size'  8311523