======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '294'
                                          'artist'  'Aphex Twin'
                                     'text_people'  ''
                                         'release'  'Selected Ambient Works 85-92'
                                           'title'  'Xtal'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-1', 'q-grit-1', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['draq', 'drjazzmrfunkmusic', 'electric textures']"
                                     'discogstags'  "['electronic', 'techno', 'idm', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '13'
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'electronic;set-pl-sced'
                                             'bpm'  '114.479'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.OTHER (Other) b''
                                     
'TALB' (Album/Movie/Show title)                     'Selected Ambient Works 85-92'
'TBPM' (BPM (beats per minute))                     '114.479'
'TCON' (Content type, a.k.a. Genre)                 ['electronic', 'set-pl-sced']
'TDOR' (Original release time)                      '1992'
'TDRC' (Recording time)                             '2002-02-12'
'TIT2' (Title/songname/content description)         'Xtal'
'TKEY' (Initial key)                                '6B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Aphex Twin'
'TPE2' (Band/orchestra/accompaniment)               'Aphex Twin'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  '[PIAS] America'
'TRCK' (Track number/Position in set)               '1/13'
'TSO2'                                              'Aphex Twin'
'TSOP' (Performer sort order)                       'Aphex Twin'
'TSRC' (ISRC (international standard recording code))  'BEZ350800022'
'TXXX:ASIN'                                         'B00005Y1TL'
'TXXX:BARCODE'                                      '805551010429'
'TXXX:CATALOGNUMBER'                                'PIASA 4'
'TXXX:MusicBrainz Album Artist Id'                  'f22942a1-6f70-4f48-866e-238cb2308fbd'
'TXXX:MusicBrainz Album Id'                         '3df76f4c-d2df-47d8-8b56-a99c5f925c5d'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'f22942a1-6f70-4f48-866e-238cb2308fbd'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'techno', 'idm', 'ambient']
'TXXX:lastfmtags'                                   ['draq', 'drjazzmrfunkmusic', 'electric textures']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '1'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-5.32 dB'
'TXXX:replaygain_track_peak'                        '0.983173'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'e5e5e3c9-8515-4abf-aebb-7529b4e9aa0b')

========================== row from database ==========================
                                              'id'  148004
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Aphex Twin/1993 - Selected Ambient Works 85-92/01 - Aphex Twin - Xtal.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  294
                                           'genre'  electronic;set-pl-sced
                                        'filesize'  11911077
                                           'mtime'  1636912295
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 1993 01 electronic;set pl sced
                                      'tag_artist'  Aphex Twin
                                     'tag_release'  Selected Ambient Works 85-92
                                       'tag_title'  Xtal
                                             'bpm'  114.479
                                    'search_title'  'xtal':1
                                   'search_artist'  'aphex':1 'twin':2
                                  'search_release'  '85':4 '8592':6 '92':5 'ambient':2 'selected':1 'works':3
                                     'search_rest'  '1993':1 'electronic':2,4 'pl':6 'sced':7 'set':3,5
                                    'search_combo'  '1993':10 '85':7C '8592':9C '92':8C 'ambient':5C 'aphex':2B 'electronic':11,13 'pl':15 'sced':16 'selected':4C 'set':12,14 'twin':3B 'works':6C 'xtal':1A
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-1', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['draq', 'drjazzmrfunkmusic', 'electric textures']
                                        'tag_date'  2002
                                     'discogstags'  ['electronic', 'techno', 'idm', 'ambient']

============================== file details ==============================
                                           'mtime'  1636912294.9730613  (2021-11-14 18:51:34)
                             'size'  11911077