======================== unified (from filesystem) ========================
                                         'bitrate'  '256.363'
                                        'duration'  '239'
                                          'artist'  'Stan Hubbs'
                                     'text_people'  ''
                                         'release'  'Crystal'
                                           'title'  'Golden Rose'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['america', 'american', 'hard rock', 'psychedelic rock', 'psychedelic']"
                                     'discogstags'  "['psychedelic rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  '2011'
                                        'comments'  ''
                                           'genre'  'rock-cppex-psychedelic'
                                             'bpm'  '123.6'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Crystal'
'TBPM' (BPM (beats per minute))                     '123.6'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-psychedelic'
'TDRC' (Recording time)                             '2011'
'TIT2' (Title/songname/content description)         'Golden Rose'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'Stan Hubbs'
'TPE2' (Band/orchestra/accompaniment)               'Stan Hubbs'
'TRCK' (Track number/Position in set)               '07'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['psychedelic rock', 'rock']
'TXXX:lastfmtags'                                   ['america', 'american', 'hard rock', 'psychedelic rock', 'psychedelic']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.70 dB'
'TXXX:replaygain_track_peak'                        '0.582309'

========================== row from database ==========================
                                              'id'  1409612
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/stan hubbs - crystal lp [companion records, 2011]/b2 - golden rose.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  239
                                           'genre'  rock-cppex-psychedelic
                                        'filesize'  7670794
                                           'mtime'  1620737329
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy stan hubbs crystal lp [companion records, 2011] b2 golden rose rock cppex psychedelic
                                      'tag_artist'  Stan Hubbs
                                     'tag_release'  Crystal
                                       'tag_title'  Golden Rose
                                             'bpm'  123.6
                                    'search_title'  'golden':1 'rose':2
                                   'search_artist'  'hubbs':2 'stan':1
                                  'search_release'  'crystal':1
                                     'search_rest'  '2011':10,11 'b2':12 'classicprogpsy':1 'companion':6,7 'cppex':16 'crystal':4 'golden':13 'hubbs':3 'lp':5 'psychedelic':17 'records':8,9 'rock':15 'rose':14 'stan':2
                                    'search_combo'  '2011':15,16 'b2':17 'classicprogpsy':6 'companion':11,12 'cppex':21 'crystal':5C,9 'golden':1A,18 'hubbs':4B,8 'lp':10 'psychedelic':22 'records':13,14 'rock':20 'rose':2A,19 'stan':3B,7
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['america', 'american', 'hard rock', 'psychedelic rock', 'psychedelic']
                                        'tag_date'  2011
                                     'discogstags'  ['psychedelic rock', 'rock']

============================== file details ==============================
                                           'mtime'  1620737328.821619  (2021-05-11 14:48:48)
                             'size'  7670794