Possible Clues:

• Ham might hear this here
• Where you might hear how to make 15 across
• Beastly pairs made the car go there, it seems
• Hear here but no 'ah!' there
• Hear here with no Ah!
• There were two pigs and one ham there
• Hear here with 16 down
• Where Noah was finally on 31 across
• Noah might hear what's there
• Where one may hear of no ''Ah!''