Certain pop stars are obvious fodder for inspiration, such as Madonna, Janet Jackson, and Cyndi Lauper. But Britney Spears isn't as obvious as you'd think, and her wide range of influences stem from a deep love of strong musical figures. Don't be surprised to find Alanis Morissette, Journey, Sonny & Cher, and Paula Cole all figuring in this collection of Brit's biggest influences.