Mash-ups instantly dissolve the barriers between musical worlds - between, say, "Total Request Live" and the indie record shop.

So was Carson Daly ("Total Request Live"), who used to go out with Tara, but now they're just friends.

MTV's most popular program is the viewer-dictated "Total Request Live."

"The Voice Within'" was the eleventh video for Aguilera to appear on Total Request Live.

The Viacom deal must be exciting, but can Daly really be thrilled to stick with "Total Request Live"?

Total Request was far more subdued, as Daly introduced music videos from an empty, dimly lit set.

The video debuted on Total Request Live the next day.

Total Request was a music video request show on MTV in the United States.

MTV's "Total Request Live" may attract a wider audience, but its members probably aren't made to think they are part of something bigger.

It debuted on MTV's Total Request Live 7 October 2002 at number seven.