On this day in music history: February 10, 1979 - “Da Ya Think I’m Sexy?” by Rod Stewart hits #1 on the Billboard Hot 100 for 4 weeks, also peaking at #5 on the R&B singles chart on March 17, 1979. Written by Rod Stewart and Carmine Appice, it is the second chart topping single for the British rock singer and songwriter. Collaborating with former Vanilla Fudge drummer Appice (now a member of his band), Rod Stewart writes a narrative about a guy meeting a girl, and then going home with her. Initially written as “a joke”, the singer has little indication of how the song will be received after recording it. Issued as the first single from his ninth album “Blondes Have More Fun”, it quickly becomes a smash. Entering the Hot 100 at #40 on December 23, 1978, it climbs to the top of the chart seven weeks later. “Sexy” sells over two million copies in the US alone, becoming Stewart’s biggest selling single, as well as a staple on dance floors around the world and even crossing over to the R&B singles chart. Stewart performs the song at the Music For UNICEF Concert in January of 1979, donating his performance royalties for the single to the charity. On the opposite side of the fence, he also receives harshly negative criticism from many fans and the rock press for “going disco”, feeling that he has betrayed his blues/rock roots. Stewart is also sued by Brazilian singer and songwriter Jorge Ben when he claims that “Sexy” plagiarizes part of his song “Taj Mahal”. The suit is settled amicably out of court. “Da Ya Think I’m Sexy?” is certified Platinum in the US by the RIAA.