[Burger's talent and dedication have led him to cross paths with many of the individuals he has admired - including President Jimmy Carter, for whom he performed in 1979 by special invitation to the White House.] That performance was a really nervous day for me, but it was exciting. He loved Gospel music and he wanted to have a Sunday afternoon dinner concert on the south lawn of the White House. It was great, they loved it, ... I haven't seen him, but we stay in touch.