Possible Clues:

• Liszt's 'Paganini __'
• Short musical studies for which Chopin, for example, is known
• Debussy piano pieces
• Chopin composed three collections of them
• Alien used criminal in studies
• Studies some of unused utensils returned
• Some Liszt pieces
• Dexterity exercises
• Certain warm-up exercises
• Spielberg film used in motion studies