How old would Helmuth Rilling be today?

Helmuth Rilling was a German choral conductor and an academic teacher who was internationally known as an authority on the music of Johann Sebastian Bach. He was the founder of the Gächinger Kantorei in 1954 when still a student, the Bach-Collegium Stuttgart in 1965, the Oregon Bach Festival in 1970, the Internationale Bachakademie Stuttgart in 1981 and other Bach Academies worldwide, as well as the Festival Ensemble Stuttgart (FES) in 2001 and Junges Stuttgarter Bach Ensemble in 2011. He taught choral conducting at the Frankfurt Musikhochschule from 1965 to 1989 and led the Frankfurter Kantorei from 1969 to 1982. He held talk concerts, introducing the music with the performers, internationally and notably in Eastern Europe.