======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '320'
                                          'artist'  'Mak & Pasteman'
                                     'text_people'  ''
                                         'release'  'Dark Techno'
                                           'title'  'Deeper (Original Mix)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'Q-JZFKS-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['house', 'uk garage', 'uk funky', 'bass', 'future garage']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '125.006'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dark Techno'
'TBPM' (BPM (beats per minute))                     '125.006'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Deeper (Original Mix)'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mak & Pasteman'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['house', 'uk garage', 'uk funky', 'bass', 'future garage']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-3.49 dB'
'TXXX:replaygain_track_peak'                        '0.628118'

========================== row from database ==========================
                                              'id'  1297880
                                            'path'  /data/Music/Bulk/00poprockelectronic/Dark - Techno/Mak & Pasteman - Deeper (Original Mix) ss.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  320
                                           'genre'  funk or soul
                                        'filesize'  12803718
                                           'mtime'  1628357697
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic ss funk or soul
                                      'tag_artist'  Mak & Pasteman
                                     'tag_release'  Dark Techno
                                       'tag_title'  Deeper (Original Mix)
                                             'bpm'  125.006
                                    'search_title'  'deeper':1 'mix':4,5 'original':2,3
                                   'search_artist'  'mak':1 'pasteman':2
                                  'search_release'  'dark':1 'techno':2
                                     'search_rest'  '00poprockelectronic':1 'funk':3 'or':4 'soul':5 'ss':2
                                    'search_combo'  '00poprockelectronic':10 'dark':8C 'deeper':1A 'funk':12 'mak':6B 'mix':4A,5A 'or':13 'original':2A,3A 'pasteman':7B 'soul':14 'ss':11 'techno':9C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['house', 'uk garage', 'uk funky', 'bass', 'future garage']
                                        'tag_date'  2005
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1628357697.3341272  (2021-08-07 19:34:57)
                             'size'  12803718