Lagerfield and Stainless Steel have both died in my yard on zone 6 winters. Mauve colored roses, and particularly mauve hybrid teas, seem to wimp out on cold winters and late freezes.
That new Love Song was not affected by the cold snap we had here this spring. It may be the best mauve rose I've ever grown. It's probably doubled in size in the past 2 weeks. I'm glad I goofed and bought 3 of it!