Well, singing in the shower… To expand your vocal range — find higher and lower pitches than you usually use — sing in the shower! Several advantages: 1) NO ONE IS LISTENING! You can play all you like, try new things; 2) the warm water lubricates your vocal folds, making higher pitches more easily available. Sing songs you know–but sing them differently. Try out characters with different vocalizations. Safely and warmly, in the rain.