Possible Clues:

• The stock thief beat it
• Echoing drum
• His dad had one pipe for two cats
• - it's beaten Macavity, say, more than once
• How 25 across will beat it at the double
• African hand-drum of repetitive kind
• African drum beaten with hands, sounds repetitive
• Beat it twice to the end of 14 down
• Following stock-theft, he beat it at the double
• Instrument that introduces a nursery rhyme