Hello, and welcome once again to "As It Is," our daily show for people learning American English.

I'm Christopher Cruise in Washington.

Today on the program, we visit with some musicians in Nigeria who are hoping to change their world...

"They don't believe music is something you can make money with so they can put food on your table. Or that music is something that can make you achieve anything."

But first, we hear how mobile phones are changing lives in Kenya -- and not always for the better...

Food or Phone?
Mobile phones were once something only rich people used. But with prices falling, both rich and poor people now depend on them for both personal and professional needs.

A collection of mobile phones.