The term 'Singer Costello' refers to the musician Elvis Costello, who is an English singer-songwriter and composer. He has released over 30 albums since his debut in 1977 and is known for his eclectic mix of musical styles, including punk, new wave, and country. He has also collaborated with many other artists, including Burt Bacharach, Paul McCartney, and The Roots. He has won numerous awards, including two Grammy Awards, and has been inducted into the Rock and Roll Hall of Fame.