With over 25 years of experience in the entertainment business he has worked on over 200 events. With fundraising being the main objective, he has contributed in many facets such as consulting, production, and music management with primary focus on military and disaster relief efforts, working with military organizations, universities, and non-profits on various levels producing concerts and large-scale events. 
In the last 10 years alone, he has overseen over 100 other charitable fundraisers including concerts, celebrity golf tournaments, air shows, movie premiers, large dinners, and auction events.

Pieter Zeeff has consulted and produced concerts all over the U.S., as well as in Europe and the Caribbean. He co-produced the “One America“ event in 2017 which was the first time that all former presidents came together to support an event. This historical disaster relief campaign raised over 45 million dollars for Texas, Florida, and Puerto Rico.  He also had the privilege to collaborate on the last two " Wall Street Rocks" TV events. In 2018, an event for veterans “Guitar Legends for Heroes” was a nationally televised concert on Tribune/Sinclair Broadcast and AXS TV.

He is currently a board member of several military non-profits in South Carolina and Florida. 2020 projects include Gateway to the Army (National monument Fort Jackson, Columbia, SC), Presidential Library Gala (President George H. W. Bush Foundation), fundraising event for Military Museum St. Augustine (Florida National Guard). Over the last two years, he has partnered with a major nonprofit Feed the Children and helped to launch a food insecurity initiative across the U.S.