"Be not afeard; the isle is full of noises,
Sounds and sweet airs, that give delight, and hurt not.
Sometimes a thousand twangling instruments
Will hum about mine ears; and sometime voices,
That, if I then had wak’d after long sleep,
Will make me sleep again; and then, in dreaming,
The clouds methought would open, and show riches
Ready to drop upon me; that, when I wak’d
I cried to dream again."
It is not just music but island spirits sent by Ariel that work their magic invisible to Caliban and the human visitors.
"Our revels now are ended. These our actors,
As I foretold you, were all spirits and
Are melted into air, into thin air;
And – like the baseless fabric of this vision –
The cloud-capped towers, the gorgeous palaces,
The solemn temples, the great globe itself,
Yea, all which it inherit, shall dissolve,
And like this insubstantial pageant faded,
Leave not a rack behind. We are such stuff
As dreams are made on, and our little life
Is rounded with a sleep."