Christian J Grube (born 20 September 1934) is a German choral conductor.
Christian Grube was born in Hanover, Germany. He studied at the Hochschule für Musik and at the Kirchenmusikschule in Hanover, majoring in conducting, voice, flute, organ, and Renaissance instruments. During his studies he became an experienced oratorio soloist, and also organized choral workshops in Germany and Switzerland.
In 1964 Grube was chosen for a new position at St. Michael's Church, Hildesheim. To recruit young singers for the Kantorei, the Lutheran Church of Hanover/Lower Saxony and the state of Lower Saxony linked the position of choirmaster (Kantor) at St. Michael’s with that of music teacher/choirmaster at the . Grube held this dual position until 1973; his reputation there earned him an invitation to the Hochschule der Künste in Berlin.
In 1973 Grube became Professor for liturgy, hymnology, and choral conducting at the Berlin University of the Arts (formerly Hochschule der Künste), as well as director of the (the State and Cathedral Choir). As its dual name suggests, the Staats- und Domchor was active both in government and church activities, singing regularly in the as the "bishop's choir", and also at official functions as the "state choir".
In 1975 Prof. Grube founded the Chamber Choir of the Berlin University of the Arts (Kammerchor der Universität der Künste).
Under his leadership, these two choirs frequently toured North and South America, the former Soviet Union, Egypt, Israel, Korea, Taiwan, and Africa, in addition to all of the European countries. These concert tours included lectures and workshops, as well as radio and television productions. His choirs have performed with Herbert von Karajan, Seiji Ozawa, Zubin Mehta, Riccardo Chailly, and Mauricio Kagel; with the Berlin Philharmonic Orchestra, the Deutsche Oper Berlin, the Berliner Ensemble, and the Komische Oper; with Dietrich Fischer-Dieskau, Edita Gruberová, and Thomas Quasthoff (who began his singing career in Grube's children's choir in Hildesheim).