Gene Pitney is the only person of any importance that I can find.
Al Wilson died on April 21, 2008 at the age of 68.
Gustl Weishappel died on April 21, 2008, in Grfelfing, Bavaria, Germany.
Giovanni Nuvoletti died on April 4, 2008, in Abano Terme, Veneto, Italy.
Mark Eiges died on April 8, 2008, in Los Angeles, California, USA.
Beatrice Arthur died peacefully on April 25th, 2009 at her Los Angeles home from cancer. She was 86 at the time and the second Golden Girl to die after Estelle Getty who passed away in July 2008.
He died on April 5 2008 of old age...
On April 29, 2008
Albert Hofmann died on April 29, 2008 at the age of 102.
Charlton Heston died on April 5, 2008 at the age of 84.
Ernesto Bonino died on April 29, 2008.
Anri Rulkov died on April 1, 2008.
Nina Schulman died on April 10, 2008.
Berndt Klyvare died on April 30, 2008.
Vladimir Ferapontov died on April 22, 2008.
Esko Nurminen died on April 26, 2008.
Dick Sasso died on April 10, 2008.
Johan Venninen died on April 13, 2008.