<Tr> <Th_colspan="2"> Echoes: The Best of Pink Floyd track listing </Th> </Tr> <Tr> <Td_colspan="2"> 26 tracks <Dl> <Dt> Disc one </Dt> </Dl> <Ol> <Li> "Astronomy Domine" </Li> <Li> "See Emily Play" </Li> <Li> "The Happiest Days of Our Lives" </Li> <Li> "Another Brick in the Wall (Part 2)" </Li> <Li> "Echoes" </Li> <Li> "Hey You" </Li> <Li> "Marooned" </Li> <Li> "The Great Gig in the Sky" </Li> <Li> "Set the Controls for the Heart of the Sun" </Li> <Li> "Money" </Li> <Li> "Keep Talking" </Li> <Li> "Sheep" </Li> <Li> "Sorrow" </Li> </Ol> <Dl> <Dt> Disc two </Dt> </Dl> <Ol> <Li> </Li> <Li> "Shine On You Crazy Diamond (Parts I--VII)" </Li> <Li> "Time" </Li> <Li> "The Fletcher Memorial Home" </Li> <Li> "Comfortably Numb" </Li> <Li> "When the Tigers Broke Free" </Li> <Li> "One of These Days" </Li> <Li> "Us and Them" </Li> <Li> "Learning to Fly" </Li> <Li> "Arnold Layne" </Li> <Li> "Wish You Were Here" </Li> <Li> "Jugband Blues" </Li> <Li> "High Hopes" </Li> <Li> "Bike" </Li> </Ol> </Td> </Tr> <Dl> <Dt> Disc one </Dt> </Dl> <Ol> <Li> "Astronomy Domine" </Li> <Li> "See Emily Play" </Li> <Li> "The Happiest Days of Our Lives" </Li> <Li> "Another Brick in the Wall (Part 2)" </Li> <Li> "Echoes" </Li> <Li> "Hey You" </Li> <Li> "Marooned" </Li> <Li> "The Great Gig in the Sky" </Li> <Li> "Set the Controls for the Heart of the Sun" </Li> <Li> "Money" </Li> <Li> "Keep Talking" </Li> <Li> "Sheep" </Li> <Li> "Sorrow" </Li> </Ol>

Who does the vocals for great gig in the sky