Thirty is the first birthday that really feels like a milestone. It's old enough to have a past and young enough that most of it still feels close. People turning thirty tend to look back with more affection than they expected, and almost all of that looking back comes with a soundtrack.

Someone born in 1996 also grew up right at the edge of two worlds. Their earliest music came from CDs in the car and the radio in the kitchen. By their teens it lived on an iPod, and soon after that, on a phone. For a generation that has streamed almost everything, a physical mixtape of their own songs is something genuinely new, and that makes it a lovely 30th birthday gift.

Their songs fall into four chapters: the year they arrived, the childhood they half remember, the teenage years they remember completely, and the twenties that followed. The best 30th birthday songs aren't the thirty biggest hits. They're a few from each chapter, chosen for the person.

The year they were born: songs from 1996

They didn't hear these the first time around, but 1996 was a big year for pop, and its hits followed them through childhood on every compilation and school disco.

"Wannabe" by the Spice Girls is the obvious opener, and obvious is fine at a party. "Macarena" by Los del Río was everywhere that summer and has been at every wedding since. "No Diggity" by Blackstreet, "Killing Me Softly" by the Fugees and "Don't Speak" by No Doubt all belong to that year too. For something with a little more atmosphere, there's "Virtual Insanity" by Jamiroquai, or "Ironic" by Alanis Morissette for the one who always had opinions.

Starting a 30th birthday playlist in 1996 is a small way of saying the story begins at the beginning.

Childhood: the early 2000s in the background

Between five and eleven, music is mostly chosen by other people. It still gets in. "Hey Ya!" by OutKast and "Crazy in Love" by Beyoncé were on every radio. "Toxic" by Britney Spears and "Since U Been Gone" by Kelly Clarkson came out of an older cousin's bedroom. "Mr. Brightside" by The Killers arrived around then too, and somehow never left.

By the end of that chapter came the first songs that felt like theirs: "Hips Don't Lie" by Shakira, "SexyBack" by Justin Timberlake and "Umbrella" by Rihanna. One or two from here is plenty. These are the songs that make a thirty-year-old laugh, say they'd forgotten that one, and then sing every word.

The teenage years: 2009 to 2014

This is the chapter that matters most. The songs people hear between thirteen and eighteen tend to stay with them for life, and someone born in 1996 was a teenager during one of the loudest, brightest stretches pop has ever had.

"Party in the U.S.A." by Miley Cyrus, "TiK ToK" by Kesha and "Bad Romance" by Lady Gaga opened it. "Baby" by Justin Bieber and "What Makes You Beautiful" by One Direction were on repeat, whether they admit it now or not. Then came "Rolling in the Deep" by Adele, "Somebody That I Used to Know" by Gotye and "Call Me Maybe" by Carly Rae Jepsen. "We Are Young" by fun. and "Royals" by Lorde belong to the last years of school, along with "Get Lucky" by Daft Punk, "Wake Me Up" by Avicii and "Happy" by Pharrell Williams. "Shake It Off" by Taylor Swift and "Uptown Funk" by Mark Ronson and Bruno Mars arrived just as they turned eighteen.

If you only have room for a handful of songs, take most of them from here.

Their twenties

By now the songs are tied to real things: university, a first job, a first apartment, friends who became family. "Closer" by The Chainsmokers belongs to the year they turned twenty. "Shape of You" by Ed Sheeran and "Despacito" by Luis Fonsi and Daddy Yankee filled the summer after. "Old Town Road" by Lil Nas X and "Blinding Lights" by The Weeknd marked the end of the decade, and then came the strange, quiet year when everyone listened to music alone at home.

After that, "drivers license" by Olivia Rodrigo, "As It Was" by Harry Styles, "Flowers" by Miley Cyrus and "Espresso" by Sabrina Carpenter carry the story close to the present. For these last few years, choose by memory, not by chart. One song from a trip you took together, or a night that turned into a story, says more than three that were simply popular.

How to turn the list into a gift

A playlist of a hundred songs is background. A mixtape of eighteen is a message. A CD holds about eighty minutes, which is close to twenty songs, and that limit helps: it makes you keep only the ones that are really about them.

Take two or three from 1996, two from childhood, seven or eight from the teenage years and the rest from their twenties. Then put them in the order they were lived, so the disc plays like a short biography. There's more on how to pick the right song order for a mixtape gift if you want the sequence to carry some weight, and a full guide on how to make a birthday mixtape someone will keep forever.

For someone who grew up on streaming, the format is part of the surprise. A cassette in particular feels like an object from a world they only half caught, which is exactly why a custom cassette makes a better birthday gift than most presents. And if the birthday is for someone a little older, there are matching lists of the best songs for a 40th birthday and the best songs for a 50th birthday.

Thirty years is a short life to fill a tape with, and a full one. When you're ready, start creating your own mixtape.