======================== unified (from filesystem) ========================
                                         'bitrate'  '79.244'
                                        'duration'  '416'
                                          'artist'  'Victor Nubla'
                                     'text_people'  ''
                                         'release'  'Piedra Nombre'
                                           'title'  'IX'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['dark ambient', 'noise', 'avant garde', 'experimental', 'ambient']"
                                     'discogstags'  "['electronic', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '84.2'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Piedra Nombre'
'TBPM' (BPM (beats per minute))                     '84.2'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'IX'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Victor Nubla'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:discogstags'                                  ['electronic', 'experimental']
'TXXX:lastfmtags'                                   ['dark ambient', 'noise', 'avant garde', 'experimental', 'ambient']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.78 dB'
'TXXX:replaygain_track_peak'                        '0.600860'

========================== row from database ==========================
                                              'id'  704142
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/victor nubla/victor nubla - piedra de la nombre - 09 - Track  9.mp3
                                         'working'  None
                                         'bitrate'  79
                                    'duration_sec'  416
                                           'genre'  electronic-experimental
                                        'filesize'  4128754
                                           'mtime'  1636917418
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm victor nubla victor nubla piedra de nombre 09 Track 9 electronic experimental
                                      'tag_artist'  Victor Nubla
                                     'tag_release'  Piedra Nombre
                                       'tag_title'  IX
                                             'bpm'  84.2
                                    'search_title'  'ix':1
                                   'search_artist'  'nubla':2 'victor':1
                                  'search_release'  'nombre':2 'piedra':1
                                     'search_rest'  '9':7 'de':4 'electronic':8 'experimental':9 'nombre':5 'nubla':2 'piedra':3 'track':6 'victor':1
                                    'search_combo'  '9':12 'de':9 'electronic':13 'experimental':14 'ix':1A 'nombre':5C,10 'nubla':3B,7 'piedra':4C,8 'track':11 'victor':2B,6
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['dark ambient', 'noise', 'avant garde', 'experimental', 'ambient']
                                        'tag_date'  1996
                                     'discogstags'  ['electronic', 'experimental']

============================== file details ==============================
                                           'mtime'  1636917418.399342  (2021-11-14 20:16:58)
                             'size'  4128754