While I know this is an old scan of Ishida, I felt like making a somewhat urban city theme, with a touch of music, since he has head phones on ;). So I went along creating a a very rough vector of some buildings, and vectored a speaker box, scaled it up and faded it in the background. Added some halftone patterns and used another building vector from GoMedia's freebies (really handy stuff). I went with some paper texture to create the cut-outs, and fill the text. This wall was done combining Illustrator and Photoshop :P. Oh.. and I like green'ish colours XD.