Bob Northern

Robert Northern (May 21, 1934 – May 31, 2020), known professionally as Brother Ah, was an American jazz French hornist. He was born in North Carolina and raised in New York City. 
In the 1970s he released several albums as a bandleader; his 1974 release "Sound Awareness" featured Max Roach and M'Boom. He taught at Dartmouth College from 1970 to 1973, Brown University from 1973 to 1982 and then at the Levine School of Music in Washington, D.C. from 1982.
Northern was also the founder of the World Music Ensemble. 
Northern died in Washington D.C. on May 31, 2020 of respiratory failure aged 86.