Country singer Ferlin Husky underwent heart surgery Tuesday morning (Dec. 27) at a Springfield, Mo., hospital. Stents were placed in two of his arteries, and the 80-year-old vocalist is expected to be released from the hospital later this week. Husky scored his first No. 1 single in 1953 with “A Dear John Letter,” a duet with Jean Shepard. As a solo artist, his No. 1 hits include 1957′s “Gone” and 1960′s “Wings of a Dove.” Now signed to Heart of Texas Records, Husky is scheduled to return to the studio in January to begin work on a new album.