======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '133'
                                          'artist'  'Speedy West & Jimmy Bryant'
                                     'text_people'  ''
                                         'release'  'Shirley & Spinoza'
                                           'title'  "Railroadin'"
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', "
 "'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['fip', 'country', 'steel guitar', 'western swing', 'rockabilly', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '98.741'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Shirley & Spinoza'
'TBPM' (BPM (beats per minute))                     '98.741'
'TCON' (Content type, a.k.a. Genre)                 ['set-pl-shirleyspinoza', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TCOP' (Copyright message)                          'Make Love Not War'
'TIT2' (Title/songname/content description)         "Railroadin'"
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Speedy West & Jimmy Bryant'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '11'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['fip', 'country', 'steel guitar', 'western swing', 'rockabilly', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.87 dB'
'TXXX:replaygain_track_peak'                        '0.279380'

========================== row from database ==========================
                                              'id'  949323
                                            'path'  /data/Music/Bulk/sns/Speedy West & Jimmy Bryant -railroadin.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  133
                                           'genre'  set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  4275638
                                           'mtime'  1621044095
                                   'redo_metaread'  0
                                        'rest_str'   sns railroadin set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Speedy West & Jimmy Bryant
                                     'tag_release'  Shirley & Spinoza
                                       'tag_title'  Railroadin'
                                             'bpm'  98.741
                                    'search_title'  'railroadin':1,2
                                   'search_artist'  'bryant':4 'jimmy':3 'speedy':1 'west':2
                                  'search_release'  'shirley':1 'spinoza':2
                                     'search_rest'  'mor':9 'pl':4 'railroadin':2 'set':3,6,8 'shirleyspinoza':5,7 'sns':1
                                    'search_combo'  'bryant':6B 'jimmy':5B 'mor':17 'pl':12 'railroadin':1A,2A,10 'set':11,14,16 'shirley':7C 'shirleyspinoza':13,15 'sns':9 'speedy':3B 'spinoza':8C 'west':4B
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-4', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['fip', 'country', 'steel guitar', 'western swing', 'rockabilly', 'rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621044094.6815667  (2021-05-15 04:01:34)
                             'size'  4275638