The Avantis were a 1960s American surf rock band known for their instrumental style and heavy use of reverb, a common trait in surf music. They gained prominence when their song "Wax 'Em Down" reached the Billboard Hot 100. Notable band members included drummer Sandy Nelson, who achieved success as a solo artist. Despite their short-lived existence, The Avantis contributed to the surf rock genre, which played a significant role during the early days of rock and roll.