======================== unified (from filesystem) ========================
                                         'bitrate'  '164.679'
                                        'duration'  '167'
                                          'artist'  'The Jimi Hendrix Experience'
                                     'text_people'  ''
                                         'release'  'Axis: Bold As Love'
                                           'title'  'Castles Made Of Sand'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'rock', 'psychedelic rock', 'psychedelic', 'classic rock']"
                                     'discogstags'  "['rock', 'psychedelic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '13'
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'rock-cppex-psychedelic'
                                             'bpm'  '132.966'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:CDDB Disc ID:XXX'                             'A109680D'
'COMM:ID3v1 Comment:XXX'                            'A109680D'
'TALB' (Album/Movie/Show title)                     'Axis: Bold As Love'
'TBPM' (BPM (beats per minute))                     '132.966'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-psychedelic'
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         'Castles Made Of Sand'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Jimi Hendrix Experience'
'TRCK' (Track number/Position in set)               '9/13'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, LAME dll 3.92, VBR 3, Stereo, High quality'
'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'                                  ['rock', 'psychedelic rock']
'TXXX:lastfmtags'                                   ['blues', 'rock', 'psychedelic rock', 'psychedelic', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.69 dB'
'TXXX:replaygain_track_peak'                        '0.595101'

========================== row from database ==========================
                                              'id'  1486233
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Jimi Hendrix/Jimi Hendrix_/Axis- Bold As Love/Jimi Hendrix - 09 - Castles Made of Sand.mp3
                                         'working'  None
                                         'bitrate'  164
                                    'duration_sec'  167
                                           'genre'  rock-cppex-psychedelic
                                        'filesize'  3454705
                                           'mtime'  1620736279
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy Hendrix_ 09 of rock cppex psychedelic
                                      'tag_artist'  The Jimi Hendrix Experience
                                     'tag_release'  Axis: Bold As Love
                                       'tag_title'  Castles Made Of Sand
                                             'bpm'  132.966
                                    'search_title'  'castles':1 'made':2 'of':3 'sand':4
                                   'search_artist'  'experience':4 'hendrix':3 'jimi':2 'the':1
                                  'search_release'  'as':4 'axis':1,2 'bold':3 'love':5
                                     'search_rest'  'classicprogpsy':1 'cppex':5 'hendrix':2 'of':3 'psychedelic':6 'rock':4
                                    'search_combo'  'as':12C 'axis':9C,10C 'bold':11C 'castles':1A 'classicprogpsy':14 'cppex':18 'experience':8B 'hendrix':7B,15 'jimi':6B 'love':13C 'made':2A 'of':3A,16 'psychedelic':19 'rock':17 'sand':4A 'the':5B
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['blues', 'rock', 'psychedelic rock', 'psychedelic', 'classic rock']
                                        'tag_date'  1989
                                     'discogstags'  ['rock', 'psychedelic rock']

============================== file details ==============================
                                           'mtime'  1620736278.6124249  (2021-05-11 14:31:18)
                             'size'  3454705