Vocabulary consisting only from characters you are able to read
音調
おんちょう
tune, tone, intonation, melody, rhythm, harmonymix
向上
こうじょう
elevation/rise/improvement/advancement/progress/(P)leda1, suru
只
ただ
(1)(uk) ordinary, common, usual, (2)free of charge, (3)unaffected, as is, safe, (adv) (4)only, merely, just, simply, (5)but, however, nevertheless mix