Conducting is the art of directing a musical performance, such as an orchestral or choral concert. It has been defined as "the art of directing the simultaneous performance of several players or singers by the use of gesture." The primary duties of the conductor are to interpret the score in a way that reflects the specific indications in that score, set the tempo, ensure correct entries by ensemble members, and "shape" the phrasing where appropriate. Conductors communicate with their musicians primarily through hand gestures, usually with the aid of a baton, and may use other gestures or signals such as facial expression and eye contact. A conductor usually supplements their direction with verbal instructions to their musicians in rehearsal.
Herbert von Karajan conducting in 1941
Giuseppe Verdi conducting his opera Aida in 1881
Leonard Bernstein conducting the Royal Concertgebouw Orchestra in 1985
Conductor's score and batons on a lit, extra-large conductor's music stand
A choir is a musical ensemble of singers. Choral music, in turn, is the music written specifically for such an ensemble to perform or in other words is the music performed by the ensemble. Choirs may perform music from the classical music repertoire, which spans from the medieval era to the present, or popular music repertoire. Most choirs are led by a conductor, who leads the performances with arm, hand, and facial gestures.
Evensong rehearsal by Blue Coat CE School Choir, Coventry, in the quire of York Minster, showing carved choirstalls
Egyptian Alexandria Jewish choir of Rabbin Moshe Cohen at Samuel Menashe synagogue, Alexandria, Egypt
The boychoir Cantores Minores in the Helsinki Cathedral in 2013
Lambrook School choir in the 1960s, a typical boys' school choir of the time