======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '306'
                                          'artist'  'I-Robots'
                                     'text_people'  ''
                                         'release'  'I-Robots'
                                           'title'  'Frau (Boysnoize Mix)'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronica', 'electro', 'electronic', 'drjazzmrfunkmusic', 'techno']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-th-techno'
                                             'bpm'  '127.044'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'I-Robots'
'TBPM' (BPM (beats per minute))                     '127.044'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno'
'TIT2' (Title/songname/content description)         'Frau (Boysnoize Mix)'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'I-Robots'
'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'                                   ['electronica', 'electro', 'electronic', 'drjazzmrfunkmusic', 'techno']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.94 dB'
'TXXX:replaygain_track_peak'                        '0.642673'

========================== row from database ==========================
                                              'id'  1340105
                                            'path'  /data/Music/Bulk/00poprockelectronic/I-Robots/I-Robots__Frau (Boysnoize Mix).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  306
                                           'genre'  electronic-th-techno
                                        'filesize'  4900385
                                           'mtime'  1620569821
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Robots__Frau electronic th techno
                                      'tag_artist'  I-Robots
                                     'tag_release'  I-Robots
                                       'tag_title'  Frau (Boysnoize Mix)
                                             'bpm'  127.044
                                    'search_title'  'boysnoize':2,3 'frau':1 'mix':4,5
                                   'search_artist'  'i':1 'irobots':3 'robots':2
                                  'search_release'  'i':1 'irobots':3 'robots':2
                                     'search_rest'  '00poprockelectronic':1 'electronic':4 'frau':3 'robots':2 'techno':6 'th':5
                                    'search_combo'  '00poprockelectronic':12 'boysnoize':2A,3A 'electronic':15 'frau':1A,14 'i':6B,9C 'irobots':8B,11C 'mix':4A,5A 'robots':7B,10C,13 'techno':17 'th':16
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'electro', 'electronic', 'drjazzmrfunkmusic', 'techno']
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620569820.919854  (2021-05-09 16:17:00)
                             'size'  4900385