Free shipping on 2+ hats · Free 30-day returns
Smiling woman at an outdoor concert wearing a charcoal ADD9 hat with five embroidered playing cards
Songs, stitched in code

Wear what you hear.

Premium headwear inspired by the songs that stay with you. Original embroidered references, made for those who know.

Music, translated.

Premium headwear inspired by the songs that stay with you. Each design turns a musical reference into an original embroidered symbol.

Good hats.
Deeper references.

Premium headwear inspired by the songs that stay with you. Built around the details, worth wearing either way.

Explore the collection The idea
EmbroideredProduction-quality stitching, not prints
Free shippingOn 2 or more hats
30-day returnsUnworn, no questions
One sizeAdjustable snapback
The first collection

Start here

See all 18 hats →
Ants on the Staff hat, Navy / Cream

Ants on the Staff

Jam Band · Navy / Cream
$40
Three Jacks + Two Nines hat, Navy / Stone

Three Jacks + Two Nines

Jam Band · 2 colors
$40
Grey Street hat, Charcoal

Grey Street

Jam Band · Charcoal
$40
Thundergod hat, Navy / Stone

Thundergod

Campus Rock · 3 colors
$40
Collections

Find your wavelength

Garage Pop

Fuzzy guitars, nerdy hearts, summer singalongs.

3 hats →

Northern Pop

Fast talkers, big choruses, kitchen-party energy.

6 hats →

Campus Rock

Three-part harmonies, hand drums, college-radio classics.

3 hats →

Jam Band

Long sets, lawn seats, parking-lot legends.

6 hats →
Close-up of embroidered sweater design
The idea

Some songs become part of your internal language.

A single object, number, image or phrase can bring the whole thing back: the opening note, the first concert, the drive home, the people who were there.

ADD9 turns those small references into original embroidered headwear. Nothing copied. Nothing obvious. Just a quiet signal between people who hear the same thing.

Explore the collection
What we make

Music, translated.

01

Recognition, not promotion

You don’t have to put the band name on your forehead to show what the music means to you.

02

Original interpretation

Every design starts as a musical memory and becomes a new symbol. Nothing copied, nothing licensed, nothing costume-like.

03

Product before novelty

A genuinely good hat, with more beneath the surface. Considered silhouettes and colors, durable materials, production-quality embroidery.

04

Belonging without broadcasting

If you recognize it, we already have something in common. If you don’t, it’s still a great hat.