"Let's Rock! Elmo" sings and plays the tambourine and a drum set. Elmo recognizes which musical instruments he's given and plays accordingly. The "Let's Rock!" toy line was expanded in 2011 and 2012 with more instruments and plush toys. Jerry Perez, general manager of Hasbro's Playskool division, said of the toy: “With 'Let's Rock! Elmo,' it's great to be able to bring to life this beloved character like never before... Kids can actually form their own Elmo rock band. Elmo knows which instrument you are playing and he will sing along or play along with you.”