Mezue ahịrịokwu na-esonụ: N'afọ 2007, n'ime ọnwa atọ
N'ịbụ onye ndị na-ede ihe nkiri na Hollywood kparịrị, Walden dere nnukwu ọrụ egwu egwu mbụ ya, "Symphony No.1 <unk> The Four Elements". Ihe ndekọ ahụ na Hollywood Studio Symphony natara nhọpụta Grammy Award abụọ na 2008.