Alyson Lee Hannigan is an American actress. She is best known for her roles as Willow Rosenberg in the television series Buffy the Vampire Slayer, Lily Aldrin on the CBS sitcom How I Met Your Mother and Michelle Flaherty in the American Pie film series.
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Buy Discography: 
| Play | Soundtrack | Movie/Serie | Type | Buy song | |
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| Bunnies | Buffy the Vampire Slayer | performer |
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| I've Got A Theory | Buffy the Vampire Slayer | performer |
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| I've Got A Theory/Bunnies/If We're Together | Buffy the Vampire Slayer | performer |
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| If We're Together | Buffy the Vampire Slayer | performer |
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| Nothing Suits Me Like a Suit | How I Met Your Mother | performer |
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| Walk Through The Fire | Buffy the Vampire Slayer | performer |
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| Don't Go Breaking My Heart | How I Met Your Mother | performer |
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