======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '130'
                                          'artist'  'Carl Smith'
                                     'text_people'  ''
                                         'release'  'Satisfaction Guaranteed - CD 2'
                                           'title'  "Time's A Wastin' (& June Carter) (Columbia 1953)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'male country', 'honky tonk', 'classic country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '1960'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '84.070'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'PRIV:PeakValue:!|\x00\x00'                         PRIV(owner='PeakValue', data=b'!|\x00\x00')
'TALB' (Album/Movie/Show title)                     'Satisfaction Guaranteed - CD 2'
'TBPM' (BPM (beats per minute))                     '84.070'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '1960'
'TIT2' (Title/songname/content description)         "Time's A Wastin' (& June Carter) (Columbia 1953)"
'TKEY' (Initial key)                                '6B'
'TLEN' (Length)                                     '130977'
'TPE1' (Lead performer(s)/Soloist(s))               'Carl Smith'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['country', 'male country', 'honky tonk', 'classic country']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.97 dB'
'TXXX:replaygain_track_peak'                        '0.485751'

========================== row from database ==========================
                                              'id'  1509179
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/Carl Smith & June Carter - Time_s A Wastin_ (Columbia, 1953).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  130
                                           'genre'  loc-namerica-country
                                        'filesize'  5241166
                                           'mtime'  1621628482
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country sweets Time_s Wastin_ (Columbia, loc namerica country
                                      'tag_artist'  Carl Smith
                                     'tag_release'  Satisfaction Guaranteed - CD 2
                                       'tag_title'  Time's A Wastin' (& June Carter) (Columbia 1953)
                                             'bpm'  84.07
                                    'search_title'  '1953':12,13 'a':4 'carter':8,9 'columbia':10,11 'june':7 's':2 'time':1 'times':3 'wastin':5,6
                                   'search_artist'  'carl':1 'smith':2
                                  'search_release'  '2':4 'cd':3 'guaranteed':2 'satisfaction':1
                                     'search_rest'  'columbia':9,10 'country':4 'exotica':2 'jazz':1 'loc':11 'namerica':12 'oldies':3 's':7 'sweets':5 'time':6 'wastin':8
                                    'search_combo'  '1953':12A,13A '2':19C 'a':4A 'carl':14B 'carter':8A,9A 'cd':18C 'columbia':10A,11A,28,29 'country':23 'exotica':21 'guaranteed':17C 'jazz':20 'june':7A 'loc':30 'namerica':31 'oldies':22 's':2A,26 'satisfaction':16C 'smith':15B 'sweets':24 'time':1A,25 'times':3A 'wastin':5A,6A,27
                                    'tag_tracknum'  15
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['country', 'male country', 'honky tonk', 'classic country']
                                        'tag_date'  1960
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621628481.8684635  (2021-05-21 22:21:21)
                             'size'  5241166