The first piece is a piano solo by Berio.

第一个节目是贝里奥的钢琴独奏。

The concert began with piano solo.

音乐会以一首钢琴独奏开始。

He has been asked to sing a solo at the concert.

他已被邀请在演奏会上表演独唱。

The student essayed his first solo flight.

该学员尝试作首次单独飞行。

His landing was awkward,but it was only the second time he'd flown solo.

他的着陆技术很不熟练，但这只是他第二次单飞。