This article does not cite any sources. Please help by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: – ···scholar·JSTOR(May 2016) (Learn how and when to remove this template message)
The ulla (hangul: 운라; hanja: 雲鑼 or 雲羅) is a traditional Korean percussion instrument comprising a set of ten small tuned gongs in a wooden frame. The gongs are struck with a beater.