Possible Clues:

• Doodle's ride
• Little horse
• Horse (worth £25?)
• Turn up composition on Empire State; Copland's was colourful
• Lyle Lovett would ride one on a boat
• Lyle Lovett lyric "If I had a ___"
• Small breed of horse
• Sum of �25 (Informal)
• Shetland __: small horse
• One-ounce glass