Conversation so far:
What is the Jar of Flies?
Columbia Records released Alice in Chains' second acoustic-based EP, Jar of Flies, on January 25, 1994.
How did Jar of Flies EP do?
Written and recorded in one week, Jar of Flies debuted at number one on the Billboard 200, becoming the first EP—and first Alice in Chains release—to top the charts
Are there any other interesting aspects about Jar of Flies besides its release?
After the release of Jar of Flies, Layne Staley entered rehab for heroin addiction.

Question: How did this affect the band?
Self-contained rewrite: How did Layne Staley'S heroin addiction affect the band?