The 33 Variations on a waltz by Anton Diabelli, Op.120, commonly known as the Diabelli Variations, is a set of variations for the piano written between 1819 and 1823 by Ludwig van Beethoven on a waltz composed by Anton Diabelli. It is often considered to be one of the greatest sets of variations for keyboard, along with J S Bach's 'Goldberg Variations'.

Nick Van Bloss's early musical training began as a chorister at Westminster Abbey and was followed by studies at the Royal College of Music with Yonty Solomon. In 1994, aged 26, Nick van Bloss played a televised recital in Poland at the Chopin Festival. This proved to be his last public appearance before he retired from playing completely for 15 years.

In April 2009, van Bloss made a 'comeback' concert at London's Cadogan Hall, playing a concerto by Bach and Beethoven's 'Emperor' Concerto with the English Chamber Orchestra. The concert, uniformly reviewed as a 'triumph' by London's critics, attracted massive media interest from all over the globe. Since then, Nick van Bloss has performed in the United States, Japan, Sweden, Austria, with the English Chamber Orchestra, and conducted concertos from the keyboard.