BBM
Apparently the American band AWOLNATION was the band that dropped out of the music festival, disappointing Josh and Leanne.
http://rollingstoneindia.com/awolnation-drops-out-of-live-from-the-console-goa/
As a baby-boomer, I had never heard of AWOLNATION, so I googled. Their songs have some very dark lyrics. "Sail" contains the line "Maybe I should kill myself" and repeats
"Blame it on my A.D.D" (said to stand for Alcohol and Drug Dependency). A quick scan of other song lyrics was depressing and there seemed to be a subtle message that death is a relief IMO.
Even though this is apparently music they liked, personally I don't want to post any of it. It may not have influenced Leanne to commit suicide, but in my experience, music can have a powerful effect on emotions. JMO