"Let Me In" is the name of a 1962 song with music and lyrics by Yvonne Baker, recorded by Baker and The Sensations, which went to #4 on the U.S. Billboard Hot 100 singles chart in 1962.
"Let Me In" may be most memorable for its repetitive "weeoo" refrain in the chorus.
The song was covered by Bonnie Raitt on her 1973 album Takin' My Time.