There's no monkey business with alt-rock's Zebra & Giraffe. Their 2008 debut Collected Memories was an unforgettable smash hit, and by their third album, singer Greg Carlin, lead guitarist Alan Shenton and drummer Mike Wright had layered on nuances of increasing complexity. "Sons” is a Depeche Mode-y mood shifter, “My Best” recalls 30 Seconds to Mars, and follow-up “Goodbye” goes toe-to-toe with All American Rejects grungier side. They make hitting musical strides really fast sound like the only way to get anywhere.