Siriusly, you cannot do that.
This morning on my way to work I found out that the Sirius Led Zeppelin channel had become quite definitely unLedded. BOO! The bland and distinctly non-Robert-Plant-ish alt-pop-boy voice that issued forth from my speakers was entirely unwelcome. I am bereft. Plantless. It was soooooo good while it lasted, but now it's back to channel 24, KTRU and CDs. Sigh.