In the summer of 1858, Bull met the 15-year-old Edvard Grieg. Bull was a friend of the Grieg family, since Ole Bull's brother was married to the sister of Grieg's mother. Bull noticed Edvard's talent and persuaded his parents to send him to further develop his talents at the Leipzig Conservatory. During the 1860s and 1870s Bull went on several tours across the U.S., often accompanied by soprano Varian Hoffman, baritone Ignatz Pollak, and pianist Edward Hoffman. He was concertmaster at the National Peace Jubilee (June 15–19, 1869) which featured an orchestra of 525 players