======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '169'
                                          'artist'  "Billy Merrin's Commanders"
                                     'text_people'  ''
                                         'release'  'Crown  141'
                                           'title'  "Ol' Ship O' Mine (vocal - Ken Crossley)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1936'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '134.110'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Crown  141'
'TBPM' (BPM (beats per minute))                     '134.110'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1936'
'TIT2' (Title/songname/content description)         "Ol' Ship O' Mine (vocal - Ken Crossley)"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               "Billy Merrin's Commanders"
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.51 dB'
'TXXX:replaygain_track_peak'                        '0.461094'

========================== row from database ==========================
                                              'id'  1503919
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1936/Billy Merrin_s Commanders - Ol_ Ship O_ Mine (vocal - Ken Crossley) 13-2-1936.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  169
                                           'genre'  prerock-vocal
                                        'filesize'  3383090
                                           'mtime'  1620666454
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1936 Merrin_s Ol_ O_ 13 2 1936 prerock
                                      'tag_artist'  Billy Merrin's Commanders
                                     'tag_release'  Crown  141
                                       'tag_title'  Ol' Ship O' Mine (vocal - Ken Crossley)
                                             'bpm'  134.11
                                    'search_title'  'crossley':10,11 'ken':9 'mine':6 'o':4,5 'ol':1,2 'ship':3 'vocal':7,8
                                   'search_artist'  'billy':1 'commanders':5 'merrin':2 'merrins':4 's':3
                                  'search_release'  '141':2 'crown':1
                                     'search_rest'  '00oldiepop':5 '1936':6 '2':11 'country':4 'exotica':2 'jazz':1 'merrin':7 'o':10 'ol':9 'oldies':3 'prerock':12 's':8
                                    'search_combo'  '00oldiepop':23 '141':18C '1936':24 '2':29 'billy':12B 'commanders':16B 'country':22 'crossley':10A,11A 'crown':17C 'exotica':20 'jazz':19 'ken':9A 'merrin':13B,25 'merrins':15B 'mine':6A 'o':4A,5A,28 'ol':1A,2A,27 'oldies':21 'prerock':30 's':14B,26 'ship':3A 'vocal':7A,8A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', '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-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1936
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666454.3592925  (2021-05-10 19:07:34)
                             'size'  3383090