JB (Swedish musician)

Janne "JB" Christoffersson is a Swedish singer and guitarist. He has been the guitarist and singer for the heavy metal band Grand Magus since 1996. He was also the singer for the stoner metal band Spiritual Beggars between 2002 and 2010. In August 2013, JB was announced as a guest on the Ayreon album The Theory of Everything.