Oz rapper to release Ledger`s last work

London: Australian rapper N`Fa will release a single for which he collaborated with Heath Ledger before the actor`s death two years ago.

They collaborated on a song `Cause An Effect`, and Ledger directed the music video. It was the last project that Ledger worked on and is being released this week, reports a news website.

"We had intended on releasing it a long, long time ago. But I didn’t feel comfortable doing so after Heath died. But friends and his family said it needed to be seen. Heath loved it," said N`Fa.

Ledger was found dead in his New York apartment in 2008.