Tomorrow will bring Water on Mars, the new album by Fishtown fuzz grunge rockers Purling Hiss. And it is not like any of their releases to date. Each of their albums up to this point has been recorded solely by guitarist and singer, Mike Polizze. The rest of the power trio, consisting of drummer Mike Sneeringer and bass player Kiel Everett, only joined Polizze to play live. But Mars cleans up the lo-fi fuzz for a more complete album, a joint effort from all three members.

“Mercury Retrograde” is the album’s first single and it showcases a new, controlled approach from the band. The song is driven by Polizze’s catchy guitar melody guitarwork – which is actually a bit reserved, considering what he’s capable of – but it nonetheless blasts off into three minutes of raw rock. This week we tread through Water on Mars on Unlocked, The Key’s regular series spotlighting new and noteworthy releases coming out of Philadelphia. We begin today with a free download of “Mercury Retrograde.” Get your mp3 below, and be sure to check back all week for an album review, music video, interview with the band and more.

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