UNIVERSAL CITY, Calif. – April 20, 2011 – NBC will offer an extended 12-minute sneak peek of its new vocal competition series “The Voice” featuring its four musician coaches – Christina Aguilera, Cee Lo Green, Adam Levine and Blake Shelton as they join to perform Green’s hit song “Crazy” – on Thursday, April 21 at 11:35-11:47 p.m. (ET) leading into that night’s “The Tonight Show with Jay Leno.”

In addition, NBC will showcase a shorter two-minute version of the sneak preview as the four coaches unite to sing Green’s “Crazy” on Saturday, April 23 at 11:30 p.m. (ET) just before the regular broadcast of “Saturday Night Live.” “SNL” will air its complete broadcast from approximately 11:30 p.m. – 1:02 a.m. (ET) that night.

On April 23, “The Tonight Show with Jay Leno” also will be seen in its entirety from approximately 11:47 p.m.-12:47 a.m. (ET).