There has been a stereotypical image of progg as something out of date and spaced out from the 1970s. On the other hand, since the end of the 1990s, many progg bands have experienced some renaissance, with many old progg bands reuniting for concerts and new records, for example Träd, Gräs och Stenar and Samla Mammas Manna. Some bands, like Nationalteatern, still go on long tours in the 21st century performing their old songs for a new generation. Silence has re-released much of their catalogue from the 1970s on CD, and old LPs with progg music are sold at high prices.