heritage artist
n.— «The revival of ABBAmania again points to the power of visual media rather than radio to fuel a new generation’s discovery of what the industry politely calls heritage artists, which translates as singer-songwriters of a certain age with a decent catalogue of hits.» —“How do I shake off ABBA?” by Kathy McCabe Daily Telegraph (Sydney, Australia) July 29, 2008. (source: Double-Tongued Dictionary)