FUSE TV - Watch Ariana Grande Sing Britney Spears & Christina Aguilera Impressions

Jimmy Fallon gives us gifts on top of gifts on top of 50th anniversary-sized presents. He never stops. Last night the Tonight Show host teamed up with Ariana Grande to bestow upon us a series of quite potentially life-changing musical impressions, all backed by the Roots.

First up: "Mary Had a Little Lamb" in the style of Britney Spears. Pretty damned good, although nowhere near the level Christina Aguilera nailed Britney's voice during this same game awhile back.

Second: "The Wheels on the Bus" in the vein of...Christina Aguilera, the impression-meister herself. This particular masterwork runs for a complete minute, full of Xtina's powerful belts and runs, reminding us that no matter how pop she seems, Ari is a true student of modern R&B, a la Aguilera.