Country pop started when pop music singers like Glen Campbell, John Denver, Olivia Newton-John, and Anne Murray (Canada), began having hits on the country charts. Songs like Campbell's "Rhinestone Cowboy" was a crossover hit between the pop and country charts. Rhinestone Cowboy was produced by blue-eyed soul writer team Dennis Lambert & Brian Potter and written by Larry Weiss. Denver's single "Take Me Home, Country Roads" went to No. 2 on the "Billboard" charts. Denver's career flourished from then on, and he had a series of hits over the next four years. In 1972, Denver scored his first Top Ten album with "Rocky Mountain High", with its title track reaching the Top Ten in 1973. In 1974 and 1975, Denver had a string of four No. 1 songs ("Sunshine on My Shoulders," "Annie's Song," "Thank God I'm a Country Boy," "I'm Sorry") and two No. 1 albums ("John Denver's Greatest Hits", "Back Home Again)". One of the artists who did this was Olivia Newton-John, who emerged from Australia in the mid-1970s, hoping to make it big in the United States. Her single "Let Me Be There" became a big pop-country crossover hit in 1974. She won a Grammy award for "Best Female Country Vocal Performance" for the song, and also won the Country Music Association's most coveted award for females, "Female Vocalist of the Year" (beating out established Nashville artists Dolly Parton, Loretta Lynn, and Tanya Tucker, as well as Canadian transplant Anne Murray). Newton-John began moving away from country in the late 1970s after starring in "Grease" and focused mostly on pop music from then onward.