When Coca-Cola made the commercial featuring I'd Like To Teach The World To Sing, which is, to this day, its most successful advertisement, the company asked that the New Seekers perform the soundtrack, using Graham's distinctive voice.
Graham, 69, is continuing her "high-energy" 70s-style performance while on tour here.
"Most of it is very up-tempo - I won't be sitting down," she says.
Graham describes the tour as a real nostalgia event and is expecting fans to come to the concert and reminisce about the 70s. "The audience will know what to expect and they're not going to be disappointed."
Graham's music career has lasted more than 50 years.
Her message for anyone wanting to get into the music industry is to do it because you love it not because you want to be famous.