Our Products

The BERP (Buzz Extension Resistance Piece)

The most efficient brass teaching tool in the world, and favorite practice aid of more than 500,000 brass professionals and students worldwide!

• Build embouchure, endurance and range.
• Practice quietly with normal resistance and no back pressure.
• Achieve a fatter sound with drop-dead intonation.

Instructional CD or Cassette

Mario Guarneri's "Brass Basics and the BERP." The essential audiotape or CD for practicing with the BERP.

Bags from Spain

Light-weight, hard-shell cases, crafted by hand of the highest quality materials available.


The first non-petroleum, non-synthetic, biodegradable lubricant for the valves of brass instruments on the market. Developed by scientists and the makers of the BERP.

Money-Back Guarantee

If you are not fully satisfied with your product, you may return it within 60 days of purchase for a full refund (less whipping and handling).

BerpBioOil is guaranteed to have a shelf life of 2 years. It is not bottled until you order it, ensuring it is fresh when you receive it.

Bags from Spain come with a 3-Year Materials & Craftsmanship Guarantee & Limited Warranty. Bags are made of the highest quality materials available and designed to be durable. If your Bag malfunctions due to a manufacturing defect, we will repair it or replace it. Warranty covers defects of workmanship or materials. This guarantee does not cover normal wear and tear, misuse or neglect. We also recommend you purchase insurance for your case, same as you would for your instrument.

About Musical Enterprises
Birth of the BERP
About the BERP
How-to BERP
Order the BERP
FAQs about BERPing
Instructional CD/Cassette
BAT (Breath Awareness Tool)
Bags from Spain
Mario's Favorites
Music Talk
Contact Us
Guarneri Jazz Quartet