Complex sentence: In 2010, Peter Kember undertook superervisory production on MGMT's second album, titled "Congratulations"; and, in 2011, he mixed and mastered Panda Bear's third album, "Tomboy".
Split into simpler sentences: In 2010, Peter Kember produced MGMT's second album, titled "Congratulations". In 2011, Kember mixed and mastered Panda Bear's third album, "Tomboy".