Prabhat Ranjan Sarkar (21 May 1921 – 21 October 1990), also known by his spiritual name Shrii Shrii Ánandamúrti (Ánanda Múrti="Bliss Embodiment"), and known as Bábá ("Father") to his disciples, was a spiritual Guru, philosopher, social reformer, linguist, author and composer of 5018 songs mostly in the Bengali language. He founded Ananda Marga (the Path of Bliss) in 1955 as a spiritual and social organisation that continues to offer instruction in meditation and yoga. and runs numerous social service and disaster relief projects throughout the world.