Rihanna has unveiled a brand new track “Sledgehammer” that will appear on the soundtrack for “Star Trek beyond”. The J. J. Abrams movie is the third film in the Star Trek reboot. It stars Idris Elba, Chris Pine, Zoe Saldana, and the late Anton Yelchin, dead in a car accident last week. “Sledgehammer”, written by Sia, is a powerful pop ballad full of metaphors and a message of self empowerment. It is not the first time that the pop star from Barbados works together with the “Chandelier” hit maker. In 2012 Rihanna had a huge hit with “Diamonds”, which was also written by Sia. “Sledgehammer” can be purchased on iTunes.