This is a very grapey-tasting grape that doesn't ripen easily. There are various varieties of Muscat - Muscat Blanc, Moscato, Muscadelle, and Muscat of Alexandria. Muscat is the grape used for Asti Spumanti, the sparkling wine from Italy. Note that Muscat has nothing to do with Muscatel.

American wines can be labeled Muscat or Moscate if at least 75% of volume is from any Muscat grape.