We're very sad to report that Adam Yauch (MCA) from the Beastie Boys has passed away, aged just 47.

Yauch was being treated for a cancerous parotid gland and a lymph node back in 2009, and despite his valiant battle, it seems it was all too much for the legendary rapper.

No official statements have been made yet as to whether the cause of death was cancer, but we can probably go ahead it was.

A very sad day for hip-hop, and a very sad day for music as a whole.

R.I.P. MCA.

Update:

An official statement has been released over at beastieboys.com.

"It is with great sadness that we confirm that musician, rapper, activist and director Adam "MCA" Yauch, founding member of Beastie Boys and also of the Milarepa Foundation that produced the Tibetan Freedom Concert benefits, and film production and distribution company Oscilloscope Laboratories, passed away in his native New York City this morning after a near-three-year battle with cancer. He was 47 years old."