"Question" is a 1970 single by the English progressive rock band the Moody Blues. It was written by guitarist Justin Hayward, who provides lead vocals. "Question" was first released as a single in April 1970 and remains their second highest-charting song in the UK, reaching number two and staying on the chart for 12 weeks. The song reached number 21 on the Billboard Top 40 in the USA. It was later featured as the lead track on the 1970 album A Question of Balance. The single also features the song "Candle of Life" on its B-side, which was from the Moody Blues' previous album To Our Children's Children's Children.