======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '183'
                                          'artist'  'Johnny Cash'
                                     'text_people'  'Johnny Cash'
                                         'release'  'Classic Country: Nashville Era, 1958-1963 Disc 2'
                                           'title'  "Don't Take Your Guns To Town"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'singer songwritergdchill', 'cover', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-country'
                                             'bpm'  '90.010'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-208 POS 32'
'COMM:ID3v1 Comment:XXX'                            '59-208 POS 32'
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'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
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'TALB' (Album/Movie/Show title)                     'Classic Country: Nashville Era, 1958-1963 Disc 2'
'TBPM' (BPM (beats per minute))                     '90.010'
'TCOM' (Composer)                                   'Johnny Cash'
'TCON' (Content type, a.k.a. Genre)                 'prerock-country'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         "Don't Take Your Guns To Town"
'TKEY' (Initial key)                                '6B'
'TLEN' (Length)                                     '183360'
'TPE1' (Lead performer(s)/Soloist(s))               'Johnny Cash'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Time Life'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.49 dB'
'TXXX:replaygain_track_peak'                        '0.710438'

========================== row from database ==========================
                                              'id'  1503374
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-208 - Johnny Cash - Don_t Take Your Guns To Town.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  183
                                           'genre'  prerock-country
                                        'filesize'  7328474
                                           'mtime'  1621627911
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 208 Don_t prerock country
                                      'tag_artist'  Johnny Cash
                                     'tag_release'  Classic Country: Nashville Era, 1958-1963 Disc 2
                                       'tag_title'  Don't Take Your Guns To Town
                                             'bpm'  90.01
                                    'search_title'  'don':1 'dont':3 'guns':6 't':2 'take':4 'to':7 'town':8 'your':5
                                   'search_artist'  'cash':2 'johnny':1
                                  'search_release'  '1958':7 '19581963':9 '1963':8 '2':11 'classic':1 'country':2,3 'disc':10 'era':5,6 'nashville':4
                                     'search_rest'  '00oldiepop':5 '1959':6 '208':8 '59':7 'country':4 'don':9 'exotica':2 'jazz':1 'oldies':3 'prerock':11 't':10
                                    'search_combo'  '00oldiepop':26 '1958':17C '19581963':19C '1959':27 '1963':18C '2':21C '208':29 '59':28 'cash':10B 'classic':11C 'country':12C,13C,25 'disc':20C 'don':1A,30 'dont':3A 'era':15C,16C 'exotica':23 'guns':6A 'jazz':22 'johnny':9B 'nashville':14C 'oldies':24 'prerock':32 't':2A,31 'take':4A 'to':7A 'town':8A 'your':5A
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627910.5281034  (2021-05-21 22:11:50)
                             'size'  7328474