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Opry star George Hamilton the Fourth is recovering from a heart attack.  The Grand Ole Opry revealed the country singer's medical emergency on Facebook Saturday, saying the 77-year-old performer "suffered a serious heart attack and is hospitalized in the Nashville area." 

Details on his condition haven't been made public.  Hamilton is perhaps best known for the hit "Abilene," which spent four weeks at number one on the country chart in 1963. 

George launched his career at the age of 19 with "A Rose and a Baby Ruth," which peaked at number six on the Billboard Hot 100 in 1956.  His first country hit was 1960's "Before This Day Ends," while his other hits include "Fort Worth, Dallas or Houston" and "Break My Mind." 

Hamilton last reached the top ten with 1970's "She's a Little Bit Country," but he continued to land songs on the chart for several more years.  He was made a member of the Grand Ole Opry in February 1960, and has remained a regular performer on the show over the past 54 years. 

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