Rick Derringer — legendary guitarist, rock icon and songwriter behind hits such as “Rock and Roll, Hoochie Koo” and “Real American” — has died. He was 77 years old.

The news comes via a Facebook post from the musician’s caretaker, Tony Wilson, who shared on Tuesday (May 27) that Derringer had passed away at 8:09 p.m. on Monday. His wife, Jenda Derringer, was at his side, as was Wilson.

“Derringer’s legacy extends beyond his music, entertaining fans with his signature energy and talent,” the announcement reads. “His passing leaves a void in the music world, and he will be deeply missed by fans, colleagues, and loved ones.”

The post did not include a cause of death, but according to a report from Variety, Derringer had been ill in recent months.

Shaped by his proficiency on guitar, Derringer’s career as a performer, songwriter and producer spanned six decades. In addition to finding fame as part of the McCoys with hits such as 1965’s “Hang On Sloopy,” the Ohio native and Florida resident also worked on music for a wide variety of artists, from Cyndi Lauper to Steely Dan, Barbra Streisand, Alice Cooper, KISS and “Weird Al” Yankovic.

Over the course of his time in the music industry, Derringer charted four albums on the Billboard 200 — starting with All American Boy, which reached No. 25 in 1974. Spring Fever and The Edgar Winter Group with Rick Derringer would later enter the chart in 1975, followed by Derringer Live in 1977.

Derringer also had one LP make it onto the Jazz Albums chart: 2002’s Free Ride.

Two of the most important pieces of Derringer’s legacy, however, will always be the songs “Rock and Roll, Hoochie Koo” and “Real American.” The former reached No. 23 on the Billboard Hot 100 in 1974 — marking Derringer’s highest career peak on the chart — while the latter is known for its use as pro wrestler Hulk Hogan’s theme song.

“Real American” was also used as campaign music for both Barack Obama and Hillary Clinton, as well as sitting president Donald Trump. In 2017, Derringer was working on a new version of the song that would “transcend politics and bring the nation together,” according to manager Kenn Moutenot, who was also the drummer in The Rick Derringer Band.

According to his Spotify, Derringer was still releasing music up until 2022. That year, he dropped a track called “Let It Be the Blues,” which followed a 2018 cover of Aimee Zimmerman’s “Always Be Your Mom” with Jenda.