 Some historians of music have also pointed to important and innovative technical developments that built on rock and roll in this period, including the electronic treatment of sound by such innovators as Joe Meek, and the elaborate production methods of the Wall of Sound pursued by Phil Spector.The instrumental rock and roll of performers such as Duane Eddy, Link Wray and the Ventures was developed by Dick Dale, who added distinctive "wet" reverb, rapid alternate picking, and Middle Eastern and Mexican influences.He produced the regional hit "Let's Go Trippin'" in 1961 and launched the surf music craze, following up with songs like "Misirlou" (1962).