After the games, Alcinous claim the Phaeacians are best at DANCING AND SINGING.
Here is the correct passage of his boast "So come — all you Phaeacian masters of the dance — now dance away! So our guest can tell his friends, when he reaches home, how far we excel the world in sailing, nimble footwork, dance and song."
A dependent clause adds something to a sentence but cannot be a standalone sentence, hence "dependent." In this sentence, "when I had... phone" is a dependent clause.
