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Mike McCready, the lead guitarist of Pearl Jam, collaborated with Layne Staley, the late frontman of Alice in Chains, on several projects. McCready played guitar on Staley's solo album, "Above," and also contributed to the soundtrack of the film "The Basketball Diaries," which featured Staley's vocals. Their musical connection was rooted in their shared experiences as part of the Seattle grunge scene in the early 1990s.