Horatious Adolphus "Pat" Kelly was a prolific, influential Jamaican rocksteady and reggae singer and innovative, groundbreaking sound engineer working with King Tubby, Bunny Lee and Scientist (musician), whose career began in the mid-1960s. He recorded as a solo artist and as a member of the vocal group the Techniques. Slim Smith, who had been the lead vocalist in the band, left The Techniques in 1966 to be replaced by Pat Kelly. The shift from ska to rocksteady suited The Techniques, with a string of hits in 1967 and 1968 notably "You Don't Care" and "Queen Majesty", tunes which were versioned by Big Youth, Tony Tuff, Duke Reid, Tommy McCook, Sonia Pottinger's High Note label with The Revolutionaries, Ronnie Davis, The Itals, Cornell Campbell and many more