The distinguished conductor-pianist Jeffrey Kahane vividly remembers when he first met Norway’s Henning Kraggerud in 2002. It was at the La Jolla Summerfest, and Kraggerud was “phenomenal,” Kahane said. “He knocked everyone’s socks off.” The two have collaborated several times, and the musical rapport they have developed makes for a richly nuanced concert experience. SFP’s Ruth Felt first heard about Kraggerud from the celebrated Norwegian pianist Leif Ove Andsnes. She later presented Kraggerud’s San Francisco recital debut in 2001. The result was sensational, and Ruth has been eager to have him back ever since.