Swedish singer-songwriter Lykke Li is a busy lady this week. She has already played headlining gigs at New York's Central Park and the Greek Theatre in Los Angeles, and she'll cap off the week with a performance at Lollapalooza in Chicago. Tonight, though, she will make an appearance on the Tonight Show with Jay Leno, where she'll play a dark yet poppy number from her latest record Wounded Rhymes.

Tonight:

Lykke Li - Tonight Show with Jay Leno, NBC 11:35 p.m.

Nicole Scherzinger - Lopez Tonight, TBS 12:00 a.m.

Fountains of Wayne - Late Night with Jimmy Fallon, NBC 12:35 a.m.

Matt and Kim - Last Call with Carson Daly, NBC 1:35 a.m.

Tomorrow:

Nicki Minaj - Good Morning America, ABC 7:00 a.m.

Maroon 5 - The Today Show, NBC 7:00 a.m.

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