For whatever reason I was motivated to look into building a pc, here's what I came up with for your budget:
PC Builder - Intel Core i5-12600KF, Radeon RX 6900 XT, Corsair iCUE 5000X RGB ATX Mid Tower - PCPartPicker
For 500 under your budget your getting a current gen CPU and a mobo that supports the next gen soon to come out. DDR5 ram that you can OC to your board's limit as well. If you want to save more money, I would recommend a B series board and dropping to a 12600 but the board I linked is great performance for price. The monitor will allow you to game/work at 1440p 170hz which you will almost always be at with the GPU I linked. Again, you can upgrade to a 13th Intel CPU at some point down the line as well with this CPU/Mobo combo.
I'm biased but fukk Nvidia, you can get a 6900xt for less than a 3080 and get way better performance. Only reason to go Nvidia would be for video streaming/creation purposes but your doing music so go AMD. Case is superior for just a bit more money, I personally have it and it's HUGE. So much room to work with. Dropped down on the SSD to save money but if you want the insurance a Samsung SSD gives you, feel free to go with that instead. Forgot your hard drive but feel free to drop it in there as you did mention making music so you'll need the additional space more than likely. Power supply I linked is better for less money, do with that what you will.
DO NOT buy a windows 10 key for $100+ dollars. Go on a third party key site and grab a key from there for like $20. Do not buy an air cooler to cool CPU/GPUs at this level unless you live in cool ambient conditions. Grabbing an AiO and a case fan to push air out of the back of your case will have your temps super cool under load.
Remember to use those promo codes listed on the pcpartpicker site and also this one on dell's site (MONITOR10), and enjoy brother
. If anyone has any improvements this list, feel free to add on.