Introduction to Live Sound with Heidi Trefethen

Join WAM and longtime WAM instructor and live sound engineer, Heidi Trefethen, for a 2-day live sound workshop, where you will learn the ins and outs of setting up and running sound for a live band at the historic The Freight in Berkeley!

On day 1, students will get an understanding of the basics, including console and signal flow, PA systems and monitors, and microphone placement. On day 2, students will go through the process of setting up and running sound for a full band.

Don't miss this rare, hands-on opportunity to learn the fundamentals of sound reinforcement in a real, 500 seat venue with a live sound expert who has worked at venues such as SFJAZZ, The Freight, and more.

This class is great for beginners and intermediate sound engineers alike who are looking to gain hands on experience while having access to expert advice. No previous experience with live sound is required.

Class Details:

When: Saturday and Sunday, September 13 & 14, 2025

Time: 10am - 3pm PDT

Location: Class will be held in person at The Freight in Berkeley

WAM Members get discounts! Become a member here. Current members please reach out to [email protected] for your member code.

Attendees can receive refunds up to 7 days before your event start date.

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About the Instructor:

Women's Audio Mission courses focus on increasing the gender balance in audio production and technology sectors since less than 5% of the population employed in these sectors are women and gender-diverse individuals. There are limited spots available in our classes, and they often sell out, so we ask that if you are not woman-identified (cisgender or transgender), nonbinary, or gender-expansive, you reconsider enrolling in the class. We will not turn anyone away, but please be mindful that if you take up a seat in the class, that is one less woman, non-binary, or gender-expansive individual that we can serve. We thank you for your understanding in advance and for joining us in our mission to advance women and girls in music production and the recording arts.

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About the Instructor:

Heidi Trefethen is a recording and live sound engineer, producer, classical and jazz French Hornist, educator, and composer. During her 31 years of work in the music industry, Heidi has worked with artists such as Shawn Colvin, Jane Fonda, Lily Tomlin, Michelle Ndegeocello, Herb Alpert and Lani Hall, Peter Yarrow of Peter, Paul, and Mary, and has a Concert Sound credit on PBS' American Masters | Holly Near: Singing for Our Lives. As a French Hornist, she has performed and given master classes in countries such as Italy, Thailand, Bosnia and Herzegovina, the UK, and Canada. The LA Philharmonic, Il Teatro d'opera di Roma, the SFJAZZ Monday Night Band, and several Bay Area regional orchestras are a few of the ensembles she has performed with. Heidi is a faculty member of the SFJAZZ Digital Lab, Women's Audio Mission, and the Institute for the Musical Arts and teaches private classes and lessons. Heidi is also a GRAMMY® Voting member and Governor on the Board of the San Francisco Chapter of the Recording Academy. She is the San Francisco Chapters' Diversity, Equity, and Inclusion Ambassador to the National DEI Team of the Recording Academy. She is passionate about equality and creating a healthy environment for women of color, gender non-conforming, and women-identified individuals in the music industry.

Host or Publisher Women's Audio Mission