======================== unified (from filesystem) ========================
                                         'bitrate'  '206.286'
                                        'duration'  '290'
                                          'artist'  'Das Ich'
                                     'text_people'  ''
                                         'release'  'Alter Ego (best of)'
                                           'title'  'Schwarzer Stern'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-2', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['german', 'ebm', 'industrial', 'gothic', 'darkwave']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  '15'
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'eid-ebm or industrial or darkwave'
                                             'bpm'  '89.374'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Alter Ego (best of)'
'TBPM' (BPM (beats per minute))                     '89.374'
'TCON' (Content type, a.k.a. Genre)                 'eid-ebm or industrial or darkwave'
'TDRC' (Recording time)                             '2007'
'TENC' (Encoded by)                                 'Lame 3.97 Mod'
'TIT2' (Title/songname/content description)         'Schwarzer Stern'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Das Ich'
'TRCK' (Track number/Position in set)               '12/15'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['german', 'ebm', 'industrial', 'gothic', 'darkwave']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.72 dB'
'TXXX:replaygain_track_peak'                        '0.470877'

========================== row from database ==========================
                                              'id'  1394309
                                            'path'  /data/Music/Bulk/00dwimp/00ebm-industrial-darkwave-goth/Das Ich/Alter Ego (best of)/12-das_ich-schwarzer_stern.mp3
                                         'working'  None
                                         'bitrate'  206
                                    'duration_sec'  290
                                           'genre'  eid-ebm or industrial or darkwave
                                        'filesize'  7494130
                                           'mtime'  1620296004
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00ebm industrial darkwave goth 12 das_ich schwarzer_stern eid ebm or industrial or darkwave
                                      'tag_artist'  Das Ich
                                     'tag_release'  Alter Ego (best of)
                                       'tag_title'  Schwarzer Stern
                                             'bpm'  89.374
                                    'search_title'  'schwarzer':1 'stern':2
                                   'search_artist'  'das':1 'ich':2
                                  'search_release'  'alter':1 'best':3,4 'ego':2 'of':5,6
                                     'search_rest'  '00dwimp':1 '00ebm':2 'darkwave':4 'das':6 'ebm':11 'eid':10 'goth':5 'ich':7 'industrial':3 'or':12 'schwarzer':8 'stern':9
                                    'search_combo'  '00dwimp':11 '00ebm':12 'alter':5C 'best':7C,8C 'darkwave':14 'das':3B,16 'ebm':21 'ego':6C 'eid':20 'goth':15 'ich':4B,17 'industrial':13 'of':9C,10C 'or':22 'schwarzer':1A,18 'stern':2A,19
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-1', 'q-bass-2', 'q-grit-3']
                                      'lastfmtags'  ['german', 'ebm', 'industrial', 'gothic', 'darkwave']
                                        'tag_date'  2007
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620296004.1488607  (2021-05-06 12:13:24)
                             'size'  7494130