Has it really been 25 years since the first “A Very Special Christmas” album? This annual gift to benefit Special Olympics is always a best-seller, and for good reason. Each year the choice of artists and songs seems to perfectly reflect the times, with a wide-ranging selection of music types. All of the current stars are here, like Train, Christina Aguilera, and OneRepublic. Looking for a Contemporary Christian artist? There’s Francesca Battistelli. Country? Vince Gill. Classic Rock? Cheap Trick. It’s all here and it’s a great cause.