Did you ever want to belt like Christina Aguilera without spending a fortune on a voice coach?

Well, good news! Christina is going to teach an online singing course, through a website called Master Class.

Courses only cost $90!  And, that price includes video lessons, interactive exercises, learning materials, and workbooks.

Christina says she can't wait to,"share all I have learned about my craft with the world and connect with my fans."

If singing's not your thing, Master Class will also offer acting instructions from Dustin Hoffman, tennis lessons with Serena Williams, and writing with James Patterson, the guy who wrote the "Alex Cross" crime novels!  So cool, right!?

Or maybe you'd be into photography with Annie Leibovitz and "performance" class with Usher.

$90!  Not bad at all!
Photo by Christopher Polk, Getty Images