Several months after RIM launched their BBM Music service in the US and UK, they’re returning the free trials for premium accounts, this time it’s longer.

New users in the US will be eligible for a free four-month trial. New users in the UK are eligible for six months of free service, but the monthly fee is more at U$8, unlike the U$5 US users pay. The fun thing about it is the more friends you have on BBM Music, the more tracks you have access to, as theirs are available to you as well. What are you waiting for?