Country rock and folk rock singers such as Gordon Lightfoot, Joni Mitchell, Leonard Cohen, Denny Doherty (of The Mamas & the Papas), David Clayton-Thomas (of Blood, Sweat & Tears), Andy Kim, Zal Yanovsky (of The Lovin' Spoonful), John Kay (of Steppenwolf), and Ian & Sylvia found international audiences. One important example was a Winnipeg band called Chad Allan & the Expressions, which had a 1965 hit with a version of Johnny Kidd and the Pirates' "Shakin' All Over". They would eventually evolve into The Guess Who, the first Canadian rock group to have a No.1 hit that reached the top on the Canadian Singles Chart and the "Billboard" Hot 100 at the same time, with "American Woman" in 1970. Their success paved the way for a new wave of Canadian singer-songwriters, including Stan Rogers, Murray McLauchlan, Bruce Cockburn and Willie P. Bennett.