B. Jeanie Groh Stoner Bumpus (born 27 November 1932) is an American composer, pianist, and teacher who publishes under the name B. J.
Her teachers included Erwin Freundlich, Randolf Holkanson, Constance Keene, Dr. Loran Olsen, and Margaret Saunders Ott.
[4][5] Rosco was the Washington State Music Teachers Association (WSMTA) 2004 Composer of the Year.
[6] In addition to the WSMTA, she has received commissions from Clavier magazine, the Joanna Hodges Summer Piano Seminar, and the Southwestern Youth Music Festival.
She also studied 20th century composition techniques in order to incorporate them in her piano teaching pieces and introduce students to contemporary music.