 Well, my dear, there's no secret. My Lord has just made me that old, Erdman explained, singing in the choir and all that kind of stuff, which is why, after all these years, Erdman still finds joy at the piano, where she continues to prove age is just a number. Erdman doesn't have any big plans for the birthday. She said maybe she'll have even more, aside from the few aches and pains from arthritis. Erdman said she's pretty healthy.