He first learned how to play classical guitar on a Spanish guitar before being turned on to rock music when he was a teenager.
His band, Sweet, had 13 Top 20 hits, including "Block Buster!" and "Fox on the Run" in the UK in the 1970s alone.
He was married to Colleen Locklear, the sister of
Bon Jovi's Richie Sambora was featured on Smith's band Heaven & Earth's 2013 album, Dig.