2 sentences

1. 他用吉他为歌手伴奏。

   tā yòng jí​tā wèi gē​shǒu bàn​zòu.

   He accompanied the singer on the guitar.

   Source: Dong Chinese Dictionary

2. 我用钢琴给你伴奏。

   wǒ yòng gāng​qín gěi nǐ bàn​zòu.

   I'll accompany you on the piano.

   Source: OpenSubtitles