Image: UbisoftOfficial screenshot from Ubisoft.
That's My Jam asks you to find 15 USB Sticks around Yara. Each stick adds a song to your vehicle radio, so you get a better soundtrack while you hunt them down.
Pick up 15 USB Sticks anywhere on Yara. The count is cumulative across your save, so sticks you found earlier still count. Buy the USB map as soon as you can afford it, then sweep the marked spots region by region.
Many sticks sit inside bunkers, offices and guarded buildings, so clear a base first and then search it calmly. Pair the hunt with other collectibles in the same area to save travel time. You do not need every stick in the game, only 15.