Question: 4 Star Records was a record label that was home to what American country music singer-songwriter who was a member of the Grand Ole Opry for nearly 50 years?

<P0-S0> 4 Star Records was a record label that recorded many well-known country music acts in the 1950s. <P0-S1>  The label, founded after World War II, was home to singers such as Hank Locklin, Maddox Brothers and Rose, Rose Maddox, Webb Pierce, Cousin Ford Lewis and T. Texas Tyler, who all regularly issued records on the label, mostly as 78rpm singles. <SEP> <P1-S0> Bradley Gaskin (born in Gadsden, Alabama) is an American country music singer-songwriter. <P1-S1>  He signed with Columbia Nashville in 2011 and has released his debut single, "Mr. Bartender" after being discovered through a talent contest sponsored by John Rich. <P1-S2>  At the time, Gaskin had been working for his father hanging sheetrock. <P1-S3>  The song entered the Hot Country Songs charts at number 51 on the chart dated for the week ending April 2, 2011. <P1-S4>  He made his Grand Ole Opry debut on August 20th, 2011. <P1-S5>  After a corporate restructuring, Gaskin moved to Columbia Records to release his second single, "Diamonds Make Babies". <P1-S6>  On June 4, 2012, it was announced that Sony Nashville was retiring the BNA label and moving its roster to Columbia Nashville. <P1-S7>  Gaskin was dropped from the label following this move. <P1-S8>  Gaskin spent much of 2012 touring with Big & Rich, typically performing "Mr. Bartender" as well as a cover of Keith Whitley's "Don't Close Your Eyes". <P1-S9>  Gaskin had plans for releasing a version of the Keith Whitley song prior to the problems that arose with his label. <P1-S10>  Gaskin wrote a Tate Stevens "Power of a Love Song" in 2013. <P1-S11>  Bradley performed "Don't Close Your Eyes" during a Grand Ole Opry performance on October 30, 2015. <SEP> <P2-S0> Crystal Gayle (born Brenda Gail Webb; January 9, 1951) is an American country music singer. <P2-S1>  Best known for her 1977 country-pop crossover hit song, "Don't It Make My Brown Eyes Blue", she had twenty #1 country hits during the 1970s and 1980s (18 on "Billboard" and 2 on "Cashbox") and six albums certified gold by the Recording Industry Association of America. <P2-S2>  Gayle became the first female artist in country music history to reach platinum sales, with her 1977 album "We Must Believe in Magic". <P2-S3>  Also noted for her nearly floor-length hair, she was voted one of the 50 most beautiful people in the world by "People" magazine in 1983. <P2-S4>  She is the younger sister of the country singer-songwriter Loretta Lynn and the singer Peggy Sue and a distant cousin of singer Patty Loveless. <P2-S5>  Gayle is a member of the Grand Ole Opry and has a star on the Hollywood Walk of Fame, near Lynn's star. <SEP> <P3-S0> Lawrence Hankins 'Hank' Locklin (February 15, 1918 – March 8, 2009) was an American country music singer-songwriter. <P3-S1>  A member of the Grand Ole Opry for nearly 50 years, Locklin had a long recording career with RCA Victor, and scored big hits with "Please Help Me, I'm Falling", "Send Me the Pillow You Dream On" and "Geisha Girl" from 1957-1960. <P3-S2>  His singles charted from 1949-1971.