SpectraTone Red Mouthpiece Reviews are coming!
We have dozens of pro players testing the new SpectraTone RED mouthpiece, and the early feedback is extremely positive.
Stay tuned for the upcoming release, which will be very limited and greatly discounted...
Stay tuned for the upcoming release, which will be very limited and greatly discounted...
Limited edition stone finger buttons
R&D Trumpets are almost sold out!
Call us to get on the build list before they are gone
Call us to get on the build list before they are gone
Don't miss upcoming discount codes via our VIP email list!
Harrelson is a Technology company focused on Research and Innovation to solve your most difficult trumpet playing challenges
"Great marketing never gives the buyer any reason to question the merits of the claim. In contrast, honest marketing invites you to learn how and why the claim is true and often gives you the resources to confirm this for yourself." -Jason Harrelson