<P> "Is There Anybody Out There?" is a song from the Pink Floyd album, The Wall . </P> <P> The first half of the piece has the same concept of "Hey You", being a distress call from Pink . Musically, it's a droning bass synthesizer with various sound effects layered on top, and a repeating chorus of "Is there anybody out there?". The shrill siren - like sound effect used during this song is also used in an earlier Pink Floyd work, "Echoes". The noise was originally used as a sort of whale call for the deep - water - based "Echoes", and is created by David Gilmour using a wah - wah pedal with the cables reversed . </P> <P> The second half of the song is an instrumental classical guitar solo . Interestingly, it is not widely known who played it: In several interviews, David Gilmour has said that he tried to perform it, and was not satisfied with the final result ("I could play it with a leather pick but couldn't play it properly fingerstyle"). Accordingly, session musician Joe DiBlasi was brought in by Michael Kamen to play with the rest of the orchestra . He was ultimately wrongly credited as "Ron DiBlasi" on the album sleeve because Roger Waters only remembered that it was a three - letter name; Ron was the closest name he could remember to Joe when creating the record . </P> <P> At this point in the plot, the bitter and alienated Pink is attempting to reach anybody outside of his self - built wall . The repeated question "Is there anybody out there?" suggests that no response is heard . </P>

Who played guitar on is there anybody out there