Aghaei and Jacobsen's Ascending Bird

This is a pretty cool piece, again performed by the 2011 Youtube Symphony Orchestra. The video also features Kseniya Simonova, a Ukranian sand artist. I'll maybe write a description up of it later.

Mason Bates' Mothership

Mason Bates
alive

Mason Bates is an American composer of symphonic music. Distinguished by his innovations in orchestration and large-scale form, Bates is best known for his expansion of the orchestra to include electronics. One of the most-performed composers of his generation, he has worked closely with the San Francisco Symphony and currently holds the position of composer-in-residence with the Chicago Symphony.

His piece Mothership, which includes an electric guitar solo, is performed below by the 2011 Youtube Symphony Orchestra.