I got a question for you: Layne Staley (born Layne Rutherford Staley, August 22, 1967 -- April 5, 2002) was an American musician known for being the lead vocalist, occasional rhythm guitarist and co-songwriter of the rock band Alice in Chains from 1987 until 1998. The band rose to international fame in the early 1990s during Seattle's grunge movement, and became known for Staley's distinct vocal style, as well as the harmonized vocals between him and guitarist / vocalist Jerry Cantrell.

Based on this passage, when did the singer of alice in chains die?
Let's think first:
The relevant sentence in the passage is: Layne Staley (born Layne Rutherford Staley, August 22, 1967 -- April 5, 2002) was an American musician known for being the lead vocalist, occasional rhythm guitarist and co-songwriter of the rock band Alice in Chains from 1987 until 1998.
Therefore, the answer is April 5 , 2002.