Complex sentence: In 1980, Vega released his eponymous first solo record, which defined the rockabilly style that he would use in his solo work for the next several years, with the song "Jukebox Babe" becoming a hit single in France.
Split into simpler sentences: In 1980, Vega released his eponymous first solo record. It defined the rockabilly style that he would use in his solo work for the next several years, with the song "Jukebox Babe" becoming a hit single in France.