Wich type of vocal folds produce a low sound? *options* short, long, thick, thin, relaxed and streched

Which group of barbarian invaders at one time controlled part of italy and formed a kingdom in southern france, and were forced into spain by the franks?

Who was the first musical composer?

In 1401 a competition to create a set of bronze doors for the baptistery of florence cathedral was held, and this competition is often credited with the beginning of renaissance art t or f?