Matthew William Tansley Stiff (born December 13, 1979 in Grimsby, North East Lincolnshire) is a baritone-bass singer, formerly with British vocal group G4.

Matthew began playing trombone at age 8. He played in the Cleethorpes District Youth Orchestra, Kingsway Printers Cleethorpes Band & the Market Rasen Band. A-level subjects: Music, Psychology, English literature, Philosophy & Cultural beliefs. Grade 8 singing. He studied music at the University of Huddersfield where he gained BA and a Master's Degree in Musical Performance. Master's Degree at Guildhall School of Music & Drama 2003 / 4

G4

G4, consisting of Jonathan Ansell, Mike Christie, Ben Thapa and Stiff; started singing together to raise money to help pay for their education. As a group they attended the ITV talent show "The X-Factor" and although they came second in the competition, signed a £1.5 million record deal with Sony-BMG. Their first album, titled G4 was released in February 2005 and sold more than 600,000 copies, bringing it to double-platinum status.

After G4 split in April 2007, lead singer Jonathan Ansell admitted that he and Stiff rowed the most, due to his complaints about Stiff's refusal to aim for perfection.^[1]