Whose song is Opening (Excerpt From Firebird Suite) / Siberian Khatru?

Artist		Album
Yes		Progeny: CD 9 University Of Georgia, Athens, GA, 14 Nov 1972 Progeny: D11 Knoxville Civic Coliseum, Knoxville, TN, 15 Nov ... Progeny: Seven Shows From Seventy-Two (CD 1 - Maple Leaf ... Progeny: Seven Shows From Seventy-Two (CD 11 - University Of ... Progeny: Seven Shows From Seventy-Two (CD 13 - Nassau ... Progeny: Seven Shows From Seventy-Two (CD 3 - Ottawa Civic ... Progeny: Seven Shows From Seventy-Two (CD 5 - Duke ... Progeny: Seven Shows From Seventy-Two (CD 7 - Greensboro ...