Sound up for some originally composed gibbon music 🎵 White-handed gibbons have very loud vocal displays. Gibbons often "sing" songs in the morning to communicate with the family and mark their territory to other neighboring groups! | Philadelphia Zoo

The Siamang is the largest of all gibbons and also the loudest as its musical calls can be heard through dense rainforest foliage up to two miles away. They boast a throat sac that inflates to nearly the size of its head to amplify their call. | Cincinnati Zoo & Botanical Garden