======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '183'
                                          'artist'  'George Scott Wood'
                                     'text_people'  ''
                                         'release'  'Columbia FB  1462'
                                           'title'  'You Gotta Know How To Dance (Six Swingers \x13 v Sam Costa)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', '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-band'
                                             'bpm'  '88.053'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Columbia FB  1462'
'TBPM' (BPM (beats per minute))                     '88.053'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1936'
'TIT2' (Title/songname/content description)         'You Gotta Know How To Dance (Six Swingers \x13 v Sam Costa)'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'George Scott Wood'
'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:q-bass'                                       '4'
'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'                        '+1.70 dB'
'TXXX:replaygain_track_peak'                        '0.657781'

========================== row from database ==========================
                                              'id'  1437059
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1936/George Scott Wood - You Gotta Know How To Dance (Six Swingers – v Sam Costa) 3-7-1936.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  183
                                           'genre'  prerock-band
                                        'filesize'  3665828
                                           'mtime'  1620560450
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1936 – 3 7 1936 prerock band
                                      'tag_artist'  George Scott Wood
                                     'tag_release'  Columbia FB  1462
                                       'tag_title'  You Gotta Know How To Dance (Six Swingers  v Sam Costa)
                                             'bpm'  88.053
                                    'search_title'  'costa':12,13 'dance':6 'gotta':2 'how':4 'know':3 'sam':11 'six':7,8 'swingers':9 'to':5 'v':10 'you':1
                                   'search_artist'  'george':1 'scott':2 'wood':3
                                  'search_release'  '1462':3 'columbia':1 'fb':2
                                     'search_rest'  '00oldiepop':5 '1936':6 '3':7 '7':8 'band':10 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9
                                    'search_combo'  '00oldiepop':24 '1462':19C '1936':25 '3':26 '7':27 'band':29 'columbia':17C 'costa':12A,13A 'country':23 'dance':6A 'exotica':21 'fb':18C 'george':14B 'gotta':2A 'how':4A 'jazz':20 'know':3A 'oldies':22 'prerock':28 'sam':11A 'scott':15B 'six':7A,8A 'swingers':9A 'to':5A 'v':10A 'wood':16B 'you':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4A
                                           '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-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1936
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620560449.6603515  (2021-05-09 13:40:49)
                             'size'  3665828