======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '170'
                                          'artist'  'Carroll Gibbons'
                                     'text_people'  ''
                                         'release'  'Columbia CB 525'
                                           'title'  'My Romance (savoy Hotel Orpheans vocal - Harry Bentley)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['piano', 'jazz', 'female vocalists', '1401fh', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1932'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '84.280'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Columbia CB 525'
'TBPM' (BPM (beats per minute))                     '84.280'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1932'
'TIT2' (Title/songname/content description)         'My Romance (savoy Hotel Orpheans vocal - Harry Bentley)'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Carroll Gibbons'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['piano', 'jazz', 'female vocalists', '1401fh', 'swing']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.56 dB'
'TXXX:replaygain_track_peak'                        '0.554966'

========================== row from database ==========================
                                              'id'  1438560
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1932/Carroll Gibbons - My Romance (Savoy Hotel Orpheans, vocal - Harry Bentley) 26-10-1932.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  170
                                           'genre'  prerock-swing
                                        'filesize'  3411857
                                           'mtime'  1620559975
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1932 (Savoy Orpheans, 26 10 1932 prerock swing
                                      'tag_artist'  Carroll Gibbons
                                     'tag_release'  Columbia CB 525
                                       'tag_title'  My Romance (savoy Hotel Orpheans vocal - Harry Bentley)
                                             'bpm'  84.28
                                    'search_title'  'bentley':9,10 'harry':8 'hotel':5 'my':1 'orpheans':6 'romance':2 'savoy':3,4 'vocal':7
                                   'search_artist'  'carroll':1 'gibbons':2
                                  'search_release'  '525':3 'cb':2 'columbia':1
                                     'search_rest'  '00oldiepop':5 '1932':6 '26':11 'country':4 'exotica':2 'jazz':1 'oldies':3 'orpheans':9,10 'prerock':12 'savoy':7,8 'swing':13
                                    'search_combo'  '00oldiepop':20 '1932':21 '26':26 '525':15C 'bentley':9A,10A 'carroll':11B 'cb':14C 'columbia':13C 'country':19 'exotica':17 'gibbons':12B 'harry':8A 'hotel':5A 'jazz':16 'my':1A 'oldies':18 'orpheans':6A,24,25 'prerock':27 'romance':2A 'savoy':3A,4A,22,23 'swing':28 'vocal':7A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['piano', 'jazz', 'female vocalists', '1401fh', 'swing']
                                        'tag_date'  1932
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559975.107748  (2021-05-09 13:32:55)
                             'size'  3411857