This is an instrumental version of 'Ombra mai fu', the opening aria from the 1738 opera Serse by George Frideric Handel.
The title translates from the Italian as "Never was a shade". It is sung by the main character, Xerxes I of Persia, admiring the shade of a plane tree.
Original songtext:
Frondi tenere e belle
del mio platano amato
per voi risplenda il fato.
Tuoni, lampi, e procelle
non v'oltraggino mai la cara pace,
nè giunga a profanarvi austro rapace.
Ombra mai fu
di vegetabile,
cara ed amabile,
soave più.
Translation:
Tender and beautiful fronds
of my beloved plane tree,
let Fate smile upon you.
May thunder, lightning, and storms
never bother your dear peace,
nor may you by blowing winds be profaned.
A shade there never was,
of any plant,
dearer and more lovely,
or more sweet.
