他在音乐会上演奏了一首莫扎特的钢琴奏鸣曲。
He performed a Mozart ___sonata for piano at the concert.
音乐会上钢琴家演奏了莫扎特的一首奏鸣曲。
The pianist performed one of Mozart's ___sonatas at the concert.
钢琴家演奏的奏鸣曲听起来格外纯净。
The pianist played a ___sonata that sounded exceptionally pure.