If the carefree summer vibe hasn't taken hold of you yet, here's an easy way to get it. A recent study from the University of Maryland Medical Center in Baltimore shows that listening to music is a powerful de-stresser and generates euphoric feelings. But you have to vary the music you hear, otherwise the mood boost wears off. Mixtape, anyone?

Click for a sustained hit of happy via our upbeat playlists (broken down by genre).

If you love your '80s ...
You Make My Dreams, by Hall and Oates
The Power of Love, by Huey Lewis & the News
Steppin' Out, by Joe Jackson
Footloose, by Kenny Loggins
99 Luft Balloons, by Nena
Hit Me With Your Best Shot, by Pat Benetar
Easy Lover, by Phil Collins
Take Me Home Tonight, by Eddie Money
We Don't Have to Take Our Clothes Off, by Jermaine Stewart
Wake Me Up Before You Go-Go, by Wham!

For the classic rock fan ...
I Want You to Want Me, by Cheap Trick

Success, by Iggy Pop
Every Little Thing She Does Is Magic by, The Police
Happy. by The Rolling Stones
Mama Told Me (Not to Come), by Three Dog Night
American Girl, by Tom Petty & the Heartbreakers
Blister in the Sun, by Violent Femmes
Ca Plane Pour Moi, by Plastic Bertrand
Disco 2000, by Pulp
Mr. Blue Sky, by ELO

In a girly mood?
It's Oh So Quiet, by Björk
Don't Get Me Wrong, by The Pretenders
The Sweet Escape, by Gwen Stefani
Our Lips are Sealed, by The Go Gos
Where's The Party?, by Madonna
I Wanna Dance With Somebody (Who Loves Me), by Whitney Houston
Love Will Never Do (Without You), by Janet Jackson
Forever Your Girl, by Paula Abdul
Happy Girl, by Beth Nielsen Chapman
Extraordinary Machine, by Fiona Apple

Some middle-school jamz ...
Cool It Now, by New Edition
All 4 Love, by Color Me Badd
Supersonic, by J.J. Fad
I Got a Man, by Positive K
Feels Good, by Tony! Toni! Toné!
Strawberry Letter 23, by Tevin Campbell
Crush on You, by The Jets
Around the Way Girl, by LL Cool J
Every Little Step, by Bobby Brown
I'm Too Sexy, by Right Said Fred

Can't find anything you like here? Tell us what music makes you smile in the comments.