高低

gāodī
  1. height; level; (music) pitch
  2. relative superiority
  3. propriety; discretion (usu. in the negative, e.g. 不知高低 bùzhīgāodī)
  4. no matter what; just; simply (will not ..., must ... etc)
  5. at long last

CEDICT

music

Entry Composition

1 高 gāo
  1. high
  2. tall
  3. above average
  4. loud
  5. your (honorific)
2 低 dī
  1. low
  2. beneath
  3. to lower (one's head)
  4. to let droop
  5. to hang down
  6. to incline