======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '230'
                                          'artist'  'The Eagles'
                                     'text_people'  ''
                                         'release'  'Reggae Singles'
                                           'title'  "Don't Look Back                                kuky3"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
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 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', 'rock', '70s', 'soft rock', 'eagles']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1974'
                                        'comments'  ''
                                           'genre'  'loc-style-reggae or dub or ska or dancehall-dub-roots and reggae'
                                             'bpm'  '102.592'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Reggae Singles'
'TBPM' (BPM (beats per minute))                     '102.592'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-reggae or dub or ska or dancehall-dub-roots and reggae'
'TDRC' (Recording time)                             '1974'
'TIT2' (Title/songname/content description)         "Don't Look Back                                kuky3"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Eagles'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['classic rock', 'rock', '70s', 'soft rock', 'eagles']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+8.20 dB'
'TXXX:replaygain_track_peak'                        '0.234391'

========================== row from database ==========================
                                              'id'  1521545
                                            'path'  /data/Music/Bulk/00localcharacter/reggae singles/kuky3a03 the eagles - don_t look back.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  230
                                           'genre'  loc-style-reggae or dub or ska or dancehall-dub-roots and reggae
                                        'filesize'  5532161
                                           'mtime'  1620524213
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter reggae singles kuky3a03 the eagles don_t look back loc style reggae or dub or ska or dancehall dub roots and reggae
                                      'tag_artist'  The Eagles
                                     'tag_release'  Reggae Singles
                                       'tag_title'  Don't Look Back                                kuky3
                                             'bpm'  102.592
                                    'search_title'  'back':5 'don':1 'dont':3 'kuky3':6 'look':4 't':2
                                   'search_artist'  'eagles':2 'the':1
                                  'search_release'  'reggae':1 'singles':2
                                     'search_rest'  'and':17 'back':9 'dancehall':15 'don':6 'dub':13 'eagles':5 'kuky3a03':3 'loc':10 'look':8 'or':12 'reggae':1 'roots':16 'singles':2 'ska':14 'style':11 't':7 'the':4
                                    'search_combo'  'and':27 'back':5A,19 'dancehall':25 'don':1A,16 'dont':3A 'dub':23 'eagles':8B,15 'kuky3':6A 'kuky3a03':13 'loc':20 'look':4A,18 'or':22 'reggae':9C,11 'roots':26 'singles':10C,12 'ska':24 'style':21 't':2A,17 'the':7B,14
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', 'rock', '70s', 'soft rock', 'eagles']
                                        'tag_date'  1974
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620524212.7246954  (2021-05-09 03:36:52)
                             'size'  5532161