======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '213'
                                          'artist'  'Joseph Spence'
                                     'text_people'  ''
                                         'release'  'Bahamian Guitarist'
                                           'title'  'Sloop John B.'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['11', 'blues', 'gospel', 'folk', 'fingerstyle']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '19'
                                      'tracktotal'  '21'
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'loc-islands-bahamas;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '116.992'
                                             'key'  '1A'
                                        'acoustid'  'e0d59670-b06b-4511-880e-858210b0ea23'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 000001B7 00000039 00003492'
'COMM:iTunNORM:eng'                                 (' 000001B7 00000039 00003492 00001B7F 0001A5BC 00028224 000056C9 00005FCF '
 '0001D1D0 0001D1D0')
'TALB' (Album/Movie/Show title)                     'Bahamian Guitarist'
'TBPM' (BPM (beats per minute))                     '116.992'
'TCON' (Content type, a.k.a. Genre)                 ['loc-islands-bahamas', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TDOR' (Original release time)                      '1972'
'TDRC' (Recording time)                             '1990'
'TENC' (Encoded by)                                 'iTunes v4.6.0.15'
'TIT2' (Title/songname/content description)         'Sloop John B.'
'TKEY' (Initial key)                                '1A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Joseph Spence'
'TPE2' (Band/orchestra/accompaniment)               'Joseph Spence'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Arhoolie'
'TRCK' (Track number/Position in set)               '19/21'
'TSO2'                                              'Spence, Joseph'
'TSOP' (Performer sort order)                       'Spence, Joseph'
'TXXX:Acoustid Id'                                  'e0d59670-b06b-4511-880e-858210b0ea23'
'TXXX:Artists'                                      'Joseph Spence'
'TXXX:BARCODE'                                      '096297034927'
'TXXX:CATALOGNUMBER'                                'CD-349'
'TXXX:MusicBrainz Album Artist Id'                  'c18b1dcf-02d4-4d7e-a6c6-dc66873958f1'
'TXXX:MusicBrainz Album Id'                         '1649294d-1c0f-4f84-b5bf-65c54fa90966'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'c18b1dcf-02d4-4d7e-a6c6-dc66873958f1'
'TXXX:MusicBrainz Release Group Id'                 '57c79dca-fbb1-30be-a48f-b229cf421916'
'TXXX:MusicBrainz Release Track Id'                 '69e888e8-3aac-38ab-b38f-73f3ebc11fe4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['11', 'blues', 'gospel', 'folk', 'fingerstyle']
'TXXX:originalyear'                                 '1972'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.85 dB'
'TXXX:replaygain_track_peak'                        '0.893201'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'93b7e3a5-0c40-4c65-ab27-761ba0c9adb6')

========================== row from database ==========================
                                              'id'  677895
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Bahamian Guitarist/19 Sloop John B..mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  213
                                           'genre'  loc-islands-bahamas;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  3498687
                                           'mtime'  1620534947
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 19 loc islands bahamas;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Joseph Spence
                                     'tag_release'  Bahamian Guitarist
                                       'tag_title'  Sloop John B.
                                             'bpm'  116.992
                                    'search_title'  'b':3,4 'john':2 'sloop':1
                                   'search_artist'  'joseph':1 'spence':2
                                  'search_release'  'bahamian':1 'guitarist':2
                                     'search_rest'  '19':5 'bahamas':8,10 'country':4 'exotica':2 'islands':7 'jazz':1 'loc':6 'mor':17 'oldies':3 'pl':12 'set':9,11,14,16 'shirleyspinoza':13,15
                                    'search_combo'  '19':13 'b':3A,4A 'bahamas':16,18 'bahamian':7C 'country':12 'exotica':10 'guitarist':8C 'islands':15 'jazz':9 'john':2A 'joseph':5B 'loc':14 'mor':25 'oldies':11 'pl':20 'set':17,19,22,24 'shirleyspinoza':21,23 'sloop':1A 'spence':6B
                                    'tag_tracknum'  19
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['11', 'blues', 'gospel', 'folk', 'fingerstyle']
                                        'tag_date'  1990
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620534946.536507  (2021-05-09 06:35:46)
                             'size'  3498687