Black Music CenterTo Sponsor SeminarBLOOMINGTON, Ind. — A Seminar on Spirituals, Blues, and1 Gospel Music will be held et Indiana University July 5-8 under sponsorship of the Black Music Center of the I.U. School of Music.Several nationally known specialists on the subjects of the seminar will participate as lecturers and discussion leaders. Also taking part will be both professional and grass-roots performers of spirituals, blues, and gospel music.