It is Allegro from Concerto Number One "Spring" from the "Four Seasons."

VOA: special.2010.03.15

Let's have a little review of the career of the great poet Orpheus as we get it certainly in L'Allegro and Il Penseroso.

让我们看看伟大诗人俄耳甫斯的经历,这在《快乐的人》和《沉思的人》中都有所提及。

耶鲁公开课 - 弥尔顿课程节选

If you've read L'Allegro and Il Penseroso, you know that the image of the great mythological poet Orpheus is always a loaded one for Milton.

如果你们读过《快乐的人》和《沉思的人》，就会知道,伟大的神话诗人俄耳甫斯对弥尔顿来说一直是个沉重的形象。

耶鲁公开课 - 弥尔顿课程节选

It's as if Milton places the beautiful poetry of Shakespeare into the mouth of this evil magician so as to dismiss all the more easily the easy, L'Allegro-mode of poetry that Shakespeare seems for Milton to embody.

这就好像弥尔顿把莎士比亚美丽的诗句,放进了邪恶魔术师的口中,所以可以更容易地反驳，好像莎士比亚把L’Allegro模式诗给弥尔顿去具体化。

耶鲁公开课 - 弥尔顿课程节选