======================== unified (from filesystem) ========================
                                         'bitrate'  '191.117'
                                        'duration'  '284'
                                          'artist'  'Preservation Hall Jazz Band'
                                     'text_people'  ''
                                         'release'  'Greetings from New Orleans'
                                           'title'  "I Ain't Got Nobody"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['new orleans', 'jazz', 'jazz or blues', 'dixieland', 'jazz band']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '14'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-o-dixiestyle'
                                             'bpm'  '109.231'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Greetings from New Orleans'
'TBPM' (BPM (beats per minute))                     '109.231'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-o-dixiestyle'
'TIT2' (Title/songname/content description)         "I Ain't Got Nobody"
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Preservation Hall Jazz Band'
'TPE2' (Band/orchestra/accompaniment)               'Preservation Hall Jazz Band'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '6/14'
'TSO2'                                              'Preservation Hall Jazz Band'
'TSOP' (Performer sort order)                       'Preservation Hall Jazz Band'
'TXXX:BARCODE'                                      '4011778013457'
'TXXX:MusicBrainz Album Artist Id'                  '1a9b4e0d-05e2-4491-83f0-a4a676283f99'
'TXXX:MusicBrainz Album Id'                         '97ae33b2-a0ef-4c30-a308-8ab443e6979d'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '1a9b4e0d-05e2-4491-83f0-a4a676283f99'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['new orleans', 'jazz', 'jazz or blues', 'dixieland', 'jazz band']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+2.43 dB'
'TXXX:replaygain_track_peak'                        '0.692998'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'df3b8975-77e8-47b5-a3c9-c709998956c6')

========================== row from database ==========================
                                              'id'  1521422
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Preservation Hall/Preservation Hall Jazz Band@Greetings From New Orleans@@06@I Ain_t Got Nobody.mp3
                                         'working'  None
                                         'bitrate'  191
                                    'duration_sec'  284
                                           'genre'  prerock-jb-jazz-o-dixiestyle
                                        'filesize'  6810933
                                           'mtime'  1620533938
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Band@Greetings From Orleans@@06@I Ain_t prerock jb jazz dixiestyle
                                      'tag_artist'  Preservation Hall Jazz Band
                                     'tag_release'  Greetings from New Orleans
                                       'tag_title'  I Ain't Got Nobody
                                             'bpm'  109.231
                                    'search_title'  'ain':2 'aint':4 'got':5 'i':1 'nobody':6 't':3
                                   'search_artist'  'band':4 'hall':2 'jazz':3 'preservation':1
                                  'search_release'  'from':2 'greetings':1 'new':3 'orleans':4
                                     'search_rest'  '06':9 'ain':11 'band':5 'country':4 'dixiestyle':15 'exotica':2 'from':7 'greetings':6 'i':10 'jazz':1 'jb':14 'oldies':3 'orleans':8 'prerock':13 't':12
                                    'search_combo'  '06':23 'ain':2A,25 'aint':4A 'band':10B,19 'country':18 'dixiestyle':29 'exotica':16 'from':12C,21 'got':5A 'greetings':11C,20 'hall':8B 'i':1A,24 'jazz':9B,15 'jb':28 'new':13C 'nobody':6A 'oldies':17 'orleans':14C,22 'prerock':27 'preservation':7B 't':3A,26
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['new orleans', 'jazz', 'jazz or blues', 'dixieland', 'jazz band']
                                        'tag_date'  
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620533937.8470778  (2021-05-09 06:18:57)
                             'size'  6810933