Yamaha rhymes with:
baja, brauhau, narasimha, omaha, arkansas, backsaw, baja, bhiksha, bluelaw, brauhau, chihuahua, chippewa, chutzpah, coleslaw, dada, denwa, duchossois, gadbois, gondwana, grandpa, hoopla, kershaw, livernois, mardi-gras, narasimha, omaha, ottawa, panama, philyaw, quebecois, quebecoise, rorschach, zsa-zsa, zsazsa
Yamaha sounds like:
yahn, yam, yamane, yamani, yamin, yan, yaney, yani, yanni, yannone, yano, yanomami, yaohan, yaun, yawn, yeaman, yemen, yemeni, yen, yene, yeoman, yim, yin, yohn, yom, yon, yona, yonan, yoneyama, yoon, youman, youn, younan, yuan, yuen, yum, yuma, yummy, yun