Queen was a British rock band composed of lead singer Freddie Mercury, guitarist Brian May, drummer Roger Taylor, and bassist John Deacon. They were active from 1970 until 1997. After Mercury's death due to bronchial pneumonia resulting from AIDS in 1991, the band released one more album - Made in Heaven (1995) based on unfinished material left by Mercury. Because of their distinctive sound, Queen is consistently ranked among the most successful and influential bands of all time. Their hit songs include "Bohemian Rhapsody", "Another One Bites the Dust", "We Are the Champions", "We Will Rock You", "You're My Best Friend", "Somebody to Love", and "Don't Stop Me Now".