A question for fans of '60s rock:
(Challenge: no Googling or using the Wiki on these names. Feel free to browse through your CD or LP collection. Your MP3 collection won't save your souls.)
1. What is common to Mahatma Gandhi, Purna Das Baul, Yukteshwar Gigi, Sri Paramhamsa Yogananda, Sri Lahiri Mahasaya and Sri Mahavatara Babaji?
2. Why is Gandhi also the odd one out in this list?