The year 1721 in music involved some significant events.

Events

• Johann Sebastian Bach marries his second wife, Anna Magdalena.
• Antonio Maria Bononcini becomes maestro di cappella in his native city of Modena.
• Georg Philipp Telemann becomes director of music in Hamburg.

Classical music

• Johann Sebastian Bach Brandenburg Concertos, a collection of 3 concerti grossi and 3 ripieno concerti
• Pietro Locatelli Concerti grossi (12), Op. 1: no 8 in F minor "Christmas Concerto"
• Alessandro Scarlatti St Cecilia Mass

Opera

• Filippo Amadei, Giovanni Bononcini & George Frideric Handel Muzio Scevola
• Nicola Porpora Eumene
• Alessandro Scarlatti La Griselda
• Georg Philipp Telemann Der Geduldige Socrates
• Antonio Vivaldi La Silvia

Births

• April 1 Pieter Hellendaal, organist, violinist and composer (died 1799)
• December 9 Peter Pelham, organist, harpsichordist and composer (d. 1805)
• date unknown
  • Barbara Campanini, dancer
  • John Garth, composer (died 1810)
  • Mathias van den Gheyn, composer (died 1785)
  • Giovanni Battista Lorenzi, Italian librettist (died 1807)

Deaths

• February 22 - Johann Christoph Bach, organist, elder brother of Johann Sebastian (born 1642)
• August - Jacques Paisible, recorder virtuoso and composer (born c. 1656)
• September 3 Jan Anton n Losy, lute player and composer (born c. 1643)
• date unknown
  • Jer nimo de Carri n, composer (b. 1660)
  • Johann Fischer, violinist, keyboardist and composer (born 1661)

mk:1721 pl:1721 w muzyce