======================== unified (from filesystem) ========================
                                         'bitrate'  '245.452'
                                        'duration'  '402'
                                          'artist'  'Recoil'
                                     'text_people'  ''
                                         'release'  'Liquid'
                                           'title'  'Breath control'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', "
 "'Q-HHRNBTT-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['dark', 'trip hop', 'ambient', 'electronic', 'labores somnium']"
                                     'discogstags'  "['electronic', 'illbient', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted;set-pl-sced'
                                             'bpm'  '107.7'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'APIC:Cover Image'                                  type PictureType.COVER_FRONT (Cover (front)) b'Cover Image'
                                     
'POPM:\x01ÿþ3'                                      POPM(email='\x01ÿþ3', rating=0, count=0)
'TALB' (Album/Movie/Show title)                     'Liquid'
'TBPM' (BPM (beats per minute))                     '107.7'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-unsorted', 'set-pl-sced']
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Breath control'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Recoil'
'TPE2' (Band/orchestra/accompaniment)               'Recoil'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'illbient', 'experimental']
'TXXX:lastfmtags'                                   ['dark', 'trip hop', 'ambient', 'electronic', 'labores somnium']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.67 dB'
'TXXX:replaygain_track_peak'                        '0.456575'

========================== row from database ==========================
                                              'id'  334687
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Recoil/Liquid/04-Breath_control.mp3
                                         'working'  None
                                         'bitrate'  245
                                    'duration_sec'  402
                                           'genre'  electronic-unsorted;set-pl-sced
                                        'filesize'  12369416
                                           'mtime'  1636756874
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 04 Breath_control electronic unsorted;set pl sced
                                      'tag_artist'  Recoil
                                     'tag_release'  Liquid
                                       'tag_title'  Breath control
                                             'bpm'  107.7
                                    'search_title'  'breath':1 'control':2
                                   'search_artist'  'recoil':1
                                  'search_release'  'liquid':1
                                     'search_rest'  'breath':1 'control':2 'electronic':3 'pl':8 'sced':9 'set':5,7 'unsorted':4,6
                                    'search_combo'  'breath':1A,5 'control':2A,6 'electronic':7 'liquid':4C 'pl':12 'recoil':3B 'sced':13 'set':9,11 'unsorted':8,10
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dark', 'trip hop', 'ambient', 'electronic', 'labores somnium']
                                        'tag_date'  2000
                                     'discogstags'  ['electronic', 'illbient', 'experimental']

============================== file details ==============================
                                           'mtime'  1636756874.3113081  (2021-11-12 23:41:14)
                             'size'  12369416