Island 8 - Menacing Muckduck Music

You hear muckduck music making menacing sound that sadly summons several squidheads. The squidheads seek silence as newborns are napping at the nursery nearby. Do you make the muckducks minimize their music or sell the squidheads a silencer that will soften the sound for the small squidheads (must have two gadgets to sell the silencer)?