奏かなで合あう

expression, godan verb (-u), intransitive verb

play in harmony; harmonize (with); match musically

Used when musical instruments or voices blend well together, creating a harmonious sound. Often implies a natural, pleasing interplay.

• バイオリンとピアノが美うつくしく奏かなで合あう。

  The violin and piano play beautifully in harmony.

• 二人ふたりの歌うた声ごえが自し然ぜんに奏かなで合あって、素す敵てきなハーモニーになった。

  Their two voices naturally harmonized, creating a lovely harmony.