1968 The Beach Boys Image Credit: Instagram.com/thebeachboys/ The Maharishi Mahesh Yogi, an Indian guru, known for developing the Transcendental Meditation technique, performed as the co-headline act during the US tour by the Beach Boys. However, the crowd’s reaction was so negative, it forced the organisers to cancel more than half of the remaining tour dates featuring the Maharishi. A cult figure with several high profile friends in the music and film world, he had performed in many countries around the world including France, Switzerland, England, Scotland, Norway, Sweden, Germany, the Netherlands, Italy, Singapore, Australia, New Zealand and parts of Africa.