YOU SAID:

Boy you best be playin

INTO JAPANESE

少年は最善なる playin

BACK INTO ENGLISH

He's playin the best

INTO JAPANESE

最高彼弾いているところです。

BACK INTO ENGLISH

Up is where he is playing.

INTO JAPANESE

までは遊んでいます。

BACK INTO ENGLISH

Until that play.

INTO JAPANESE

までそのプレイ。

BACK INTO ENGLISH

Until that play.