Far from being dusty and dreary, harmoniums, or pump organs, were grand instruments that took their place at the heart of 19th-century French music, says Andrew Green
You can vote for over 250 instruments in the Classic 100: Your Favourite Instrument. We've put together a glossary of the instruments on the voting list so you can find out more about any instruments you're interested in.
The Jathedar of the Akal Takht has called upon the top Sikh religious body to phase out the harmonium from hymn-singing at the Golden Temple in three years and replace it with string instruments.