 On February 16, 1968, the group began its first East Coast tour in Philadelphia, and the following day gave their first performance in New York City at the Anderson Theater.On April 7, 1968, the last day of their East Coast tour, Joplin and Big Brother performed with Jimi Hendrix, Buddy Guy, Joni Mitchell, Richie Havens, Paul Butterfield, and Elvin Bishop at the "Wake for Martin Luther King, Jr." concert in New York.