In the mid 1980's, Rama changed the focus of his teaching from a more Hindu style to Zen. It should be noted that pretty much anything that Rama taught was essentially a Tantric teaching -- Rama would draw on anything that he felt would be able to help his students. He wasn't really a Zen teacher; he wasn't really a Hindu teacher; he wasn't really a mystic; he wasn't really a Tibetan Buddhist teacher; and yet at the same time he was all of those things and more. For whatever reason, though, in the mid 1980's Rama saw that Zen was the best style to teach under for awhile. A taste of what the Zen Seminars were like can be gotten by clicking on the link below.
Meeting Zen Master Rama