======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '172'
                                          'artist'  'Russ Case'
                                     'text_people'  ''
                                         'release'  'History of Space Age Pop, Vol. 2: Mallets in Wonderland'
                                           'title'  "The Sailor's Dance"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['illstreet', 'pop', 'fox trot']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-lounge or exotica or bossa'
                                             'bpm'  '129.5'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'History of Space Age Pop, Vol. 2: Mallets in Wonderland'
'TBPM' (BPM (beats per minute))                     '129.5'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-lounge or exotica or bossa'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         "The Sailor's Dance"
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '172042'
'TPE1' (Lead performer(s)/Soloist(s))               'Russ Case'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '13'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['illstreet', 'pop', 'fox trot']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.09 dB'
'TXXX:replaygain_track_peak'                        '0.478566'

========================== row from database ==========================
                                              'id'  1497186
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/va - space age pop & mid century domestics (jingles & themes)/(1956) russ case - the sailor_s dance.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  172
                                           'genre'  prerock-jb-jazz-lounge or exotica or bossa
                                        'filesize'  4141341
                                           'mtime'  1620539213
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm va space age pop & mid century domestics (jingles & themes) (1956) russ case the sailor_s dance prerock jb jazz lounge exotica bossa
                                      'tag_artist'  Russ Case
                                     'tag_release'  History of Space Age Pop, Vol. 2: Mallets in Wonderland
                                       'tag_title'  The Sailor's Dance
                                             'bpm'  129.5
                                    'search_title'  'dance':5 's':3 'sailor':2 'sailors':4 'the':1
                                   'search_artist'  'case':2 'russ':1
                                  'search_release'  '2':9,10 'age':4 'history':1 'in':12 'mallets':11 'of':2 'pop':5,6 'space':3 'vol':7,8 'wonderland':13
                                     'search_rest'  '1956':12,13 'age':3 'bossa':25 'case':15 'century':6 'dance':19 'domestics':7 'exotica':24 'jazz':22 'jb':21 'jingles':8,9 'lounge':23 'mid':5 'pop':4 'prerock':20 'russ':14 's':18 'sailor':17 'space':2 'the':16 'themes':10,11 'va':1
                                    'search_combo'  '1956':32,33 '2':16C,17C 'age':11C,23 'bossa':45 'case':7B,35 'century':26 'dance':5A,39 'domestics':27 'exotica':44 'history':8C 'in':19C 'jazz':42 'jb':41 'jingles':28,29 'lounge':43 'mallets':18C 'mid':25 'of':9C 'pop':12C,13C,24 'prerock':40 'russ':6B,34 's':3A,38 'sailor':2A,37 'sailors':4A 'space':10C,22 'the':1A,36 'themes':30,31 'va':21 'vol':14C,15C 'wonderland':20C
                                    'tag_tracknum'  13
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['illstreet', 'pop', 'fox trot']
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620539213.177001  (2021-05-09 07:46:53)
                             'size'  4141341