Grab a guitar and get ready to jam with Black Mamba! Play this slot for free in online casino. Join the band Black Mamba as they perform a gig on the grid. Band members Fred, Cecilia and Alexandra make up in-game symbols alongside a guitar pick, drumsticks, headphones and a microphone. The band logo and lead singer Martina are your Wilds. The Concert feature will give another spin, and then each member of the band will get a chance to perform their solo in order when there are no more wins on the grid. Free Spins can be retriggered by filling the on-screen charge meter with 4 to 6 charges, as with Concert. Achieving 4 to 5 charges award, two free spins and 6 charges award four free spins. The Concert feature can also be triggered during Free Spins!