======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '303'
                                          'artist'  'Ozric Tentacles'
                                     'text_people'  ''
                                         'release'  'Waterfall Cities'
                                           'title'  "Ch'ai?"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
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 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['instrumental', 'psychedelic rock', 'space rock', 'progressive rock', "
 "'psychedelic']")
                                     'discogstags'  "['electronic', 'rock', 'space rock', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '7'
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'rock-cppex-psychedelic-space;set-pl-progspace'
                                             'bpm'  '94'
                                             'key'  '5B'
                                        'acoustid'  'a0c09b24-829b-4e21-ab4c-b861e1f62231'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Waterfall Cities'
'TBPM' (BPM (beats per minute))                     '94'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-psychedelic-space', 'set-pl-progspace']
'TDOR' (Original release time)                      '1999'
'TDRC' (Recording time)                             '1999-07-06'
'TIT2' (Title/songname/content description)         "Ch'ai?"
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Ozric Tentacles'
'TPE2' (Band/orchestra/accompaniment)               'Ozric Tentacles'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '4/7'
'TSO2'                                              'Ozric Tentacles'
'TSOP' (Performer sort order)                       'Ozric Tentacles'
'TXXX:ASIN'                                         'B00000JJBV'
'TXXX:Acoustid Id'                                  'a0c09b24-829b-4e21-ab4c-b861e1f62231'
'TXXX:Artists'                                      'Ozric Tentacles'
'TXXX:MusicBrainz Album Artist Id'                  '5629ca87-9086-48c4-8dc4-b4a966c45067'
'TXXX:MusicBrainz Album Id'                         '9a51e7f0-8658-3da7-b112-541a1306b870'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '5629ca87-9086-48c4-8dc4-b4a966c45067'
'TXXX:MusicBrainz Release Group Id'                 '82cee63e-26bb-3764-93ac-686892b03c86'
'TXXX:MusicBrainz Release Track Id'                 'c1e1de0f-ee24-3631-adf5-a2645e8443a7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'rock', 'space rock', 'ambient']
'TXXX:lastfmtags'                                   ['instrumental',
 'psychedelic rock',
 'space rock',
 'progressive rock',
 'psychedelic']
'TXXX:originalyear'                                 '1999'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '4'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.55 dB'
'TXXX:replaygain_track_peak'                        '0.409807'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'dcd94eb3-317a-4fae-b6d4-a62927d7c6d5')

========================== row from database ==========================
                                              'id'  1505453
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/0psy/Ozric tentacles/Ozric Tentacles - Waterfall Cities - 04-07 - Ch_ai.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  303
                                           'genre'  rock-cppex-psychedelic-space;set-pl-progspace
                                        'filesize'  12165571
                                           'mtime'  1620736039
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 0psy tentacles 04 07 Ch_ai rock cppex psychedelic space;set pl progspace
                                      'tag_artist'  Ozric Tentacles
                                     'tag_release'  Waterfall Cities
                                       'tag_title'  Ch'ai?
                                             'bpm'  94.0
                                    'search_title'  'ai':2 'ch':1 'chai':3
                                   'search_artist'  'ozric':1 'tentacles':2
                                  'search_release'  'cities':2 'waterfall':1
                                     'search_rest'  '0psy':1 'ai':4 'ch':3 'cppex':6 'pl':12 'progspace':13 'psychedelic':7 'rock':5 'set':9,11 'space':8,10 'tentacles':2
                                    'search_combo'  '0psy':8 'ai':2A,11 'ch':1A,10 'chai':3A 'cities':7C 'cppex':13 'ozric':4B 'pl':19 'progspace':20 'psychedelic':14 'rock':12 'set':16,18 'space':15,17 'tentacles':5B,9 'waterfall':6C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-4', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['instrumental', 'psychedelic rock', 'space rock', 'progressive rock', 'psychedelic']
                                        'tag_date'  1999
                                     'discogstags'  ['electronic', 'rock', 'space rock', 'ambient']

============================== file details ==============================
                                           'mtime'  1620736039.2569175  (2021-05-11 14:27:19)
                             'size'  12165571