dr. sutherland had another ground breaking development. he had a display to allow people to experience the world in a competely different way. virtual reality. >> translator: his invention took us all by surprise. it showed computers can do more than just help draw pictures. it plunked us into a real of 3-d virtuality. >> reporter: since then it's become more and more experimental. at the age of 75 sutherland conducts research at his university. >> whas there at the gulf of your thinking? >> it does a great composure in terms of impact does it have on people or does he think the music is enjoyable as he writes it. i think the latter. >> you'll keep on inventing and thinking. >> aisle keep on as long as i ntione >>two artists in australia are thanking as well. they're found a new way of playing a instrument by crawling inside. the al rations allow pianoist to perform inside a grand piano. it's part of an exhibition in melbourne. the two artists from cuba and the u.s. cut a whole in the piano to allow a pianoist to get in. because the artist