======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '181'
                                          'artist'  'Billie holiday'
                                     'text_people'  ''
                                         'release'  'Fallout 4 OST (Diamond radio station)'
                                           'title'  'Easy Living'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-3', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['vocal jazz', 'blues', 'jazz', 'female vocalists']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '38'
                                            'date'  '2015'
                                        'comments'  ''
                                           'genre'  'soundtrack-game'
                                             'bpm'  '89.414'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Fallout 4 OST (Diamond radio station)'
'TBPM' (BPM (beats per minute))                     '89.414'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-game'
'TDRC' (Recording time)                             '2015'
'TIT2' (Title/songname/content description)         'Easy Living'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Billie holiday'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '5/38'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf53.30.100'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['vocal jazz', 'blues', 'jazz', 'female vocalists']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.95 dB'
'TXXX:replaygain_track_peak'                        '0.423225'

========================== row from database ==========================
                                              'id'  739676
                                            'path'  /data/Music/Bulk/0soundtrack/Fallout 4 - Diamond City Radio/05. Billie holiday - Easy Living.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  181
                                           'genre'  soundtrack-game
                                        'filesize'  2912075
                                           'mtime'  1623433162
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack City Radio 05. soundtrack game
                                      'tag_artist'  Billie holiday
                                     'tag_release'  Fallout 4 OST (Diamond radio station)
                                       'tag_title'  Easy Living
                                             'bpm'  89.414
                                    'search_title'  'easy':1 'living':2
                                   'search_artist'  'billie':1 'holiday':2
                                  'search_release'  '4':2 'diamond':4,5 'fallout':1 'ost':3 'radio':6 'station':7,8
                                     'search_rest'  '05':4,5 '0soundtrack':1 'city':2 'game':7 'radio':3 'soundtrack':6
                                    'search_combo'  '05':16,17 '0soundtrack':13 '4':6C 'billie':3B 'city':14 'diamond':8C,9C 'easy':1A 'fallout':5C 'game':19 'holiday':4B 'living':2A 'ost':7C 'radio':10C,15 'soundtrack':18 'station':11C,12C
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['vocal jazz', 'blues', 'jazz', 'female vocalists']
                                        'tag_date'  2015
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1623433162.1603103  (2021-06-11 19:39:22)
                             'size'  2912075