Other hit songs include a cover of ' Go West', and their own ' Opportunities (Let's Make Lots of Money)', and ' What Have I Done to Deserve This?' in a duet with Dusty Springfield. Three-time Brit Award winners and six-time Grammy nominees, since 1984 they have achieved 42 Top 30 singles, 22 of these being Top 10 hits in the UK Singles Chart, including four UK number ones: ' West End Girls' (also number one on the US Billboard Hot 100), ' It's a Sin', a synth-pop version of ' Always on My Mind', and ' Heart'. Consisting of primary vocalist Neil Tennant and keyboardist Chris Lowe, they have sold more than 100 million records worldwide, and were listed as the most successful duo in UK music history in the 1999 edition of The Guinness Book of Records. Pet Shop Boys are an English synth-pop duo formed in London in 1981.
