—music's power
Is little felt in sunlit hour;
But hear its voice when hopes depart,
Like swallows, flying from the heart
On which the summer's late decline
Has set a sadness and a sign;......
How deeply will the spirit feel
The lute, the song's sweet-voiced appeal;
And how the heart drink in their sighs
As echoes they from Paradise.
Canto IV - The Troubadour (1825)