Much of Dusum Khyenpa's Collected Works are taken up with complete sets of teachings on the various yidams of the Kagyu lineage that he received and practised. However, there is a small section containing eight dohas (spontaneous songs of spiritual realization) sung by Dusum Khyenpa. There is also a short text that gives the transmission of a specific Mahamudra teaching called Mahamudra, the Thunderbolt.
As a matter of interest, it's amazed to find a text in Dusum Khyenpa's Collected Works that gives specific details of how to do the practice called "Dead Entry" - a practice which was supposedly eliminated from the Kagyu transmission because of the dangers involved. It is often said that the teaching disappeared with Marpa the Translator but this entry in the Collected Works shows that it really was transmitted on through the lineage.