Scott Dennis Armstrong loved theater all his life, singing in “Carmen” at age 3 and then, as an adult, touring the country as an audio engineer with a wide range of shows. He died peacefully at his home in Chester, New York on Thursday morning, Oct. 6, 2016. He was 49. He was surrounded by beloved family, friends, and his dog, Max, who died the next day, on Friday afternoon, Oct. 7.

Mr. Armstrong was born in Albany on Feb. 25, 1967 to Ronald and Agnes Fingerlin Armstrong. The family moved to Altamont in 1970, residing in the vicinity of the extended Armstrong clan.

“Scott enjoyed his Altamont childhood, riding bikes, camping, fishing, and tagging along with his father to numerous local sporting events,” his family wrote in a tribute. He received his Regents diploma from Guilderland High School in 1985, and went on to study electrical engineering and theater at Hudson Valley Community College and the State University of New York at Albany.

“His love of theater began at age 3, when he sang in the children’s chorus of the opera ‘Carmen,’” his family wrote. He took child roles with the Guilderland Players in such shows as “Annie Get Your Gun” and “South Pacific.” While in high school, he sang in choirs, and continued performing in plays and musicals.

His first professional job in theater was with Specialized Audio-Visual Inc. (SAVI) in Clifton Park. This led to a long and satisfying career in audio engineering, and a job with a touring production of “The Sound of Music,” the first of his many national non-union and union tours.

Mr. Armstrong was pleased that his career took him to 48 out of the 50 states, and that he picked up the 49th and 50th — Hawaii and Alaska — on separate vacations. “Scott loved to travel and had an affinity for our national parks,” his family wrote. “While living in Las Vegas, Nevada, he worked for Cirque du Soleil and was proud to be the third person ever to mix their long-running Las Vegas production, ‘Mystère.’”

He became a member of the International Alliance of Theatrical Stage Employees, Local 720, and kept his membership current through the rest of his life.

After numerous “last tours,” Mr. Armstrong retired from the road for the final time in 2005. He was proud to have toured with such productions as “Kiss of the Spider Woman,” “SPIRIT,” “Gumboots,” “STOMP,” “Elaine Stritch: At Liberty,” and “Flower Drum Song.”

He and Peg Schuler Armstrong married in 2006, making their home in Monroe, New York, where Mr. Armstrong became active in sustainability issues. He served as treasurer of the Hudson Valley Biodiesel Co-op; was proud to patronize and hold a CSA (Community Supported Agriculture) membership at Blooming Hill Farm in Blooming Grove, New York; and for a short time volunteered at hydropowered local radio station WJFF in Jeffersonville, New York.

“He took great satisfaction in fostering dogs for Boxer Angels Rescue,” his family wrote.

Mr. Armstrong continued to make his living in theater as a freelancer, working at John Jay College’s Gerald W. Lynch Theater and building sound systems for Broadway and Off-Broadway productions and national tours.

In 2008, Mr. Armstrong contracted pulmonary pneumonitis, which led to a diagnosis of interstitial lung disease and pulmonary hypertension. “He continued to live his life, working, attending Yankees games, vacationing, and pursuing his personal interests with the assistance of supplementary oxygen,” his family wrote.

In July of 2016, he contracted pneumonia, and, after a short hospital stay, entered in-home hospice. “Scott received kind and devoted care from his home hospice team,” his family wrote, “and his family is very grateful to Joanne, Mary, Helen, Donna, Ellen, Gina, and Sr. Ann, as well as to his longtime pulmonologist, Dr. Nancy Linneman.”

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Scott Dennis Armstrong is survived by his wife of 10 years, Peg Schuler Armstrong, of Chester, New York; his mother, Agnes Armstrong, of Altamont; his sisters, Brenda Goodknight of Altamont and Rebecca Harris and her husband, Steve, of Tully, New York; his sister-in-law, Mary P. Menszak, of Ambler, Pennsylvania; his brother-in-law, Gerard E. Schuler Jr., of Oaklyn, New Jersey; his mother-in-law, Mary Heade, of Woodbury, New Jersey; and his father-in-law, Gerard E. Schuler Sr., of Oaklyn, New Jersey.

He is also survived by his uncles, Roger Fingerlin and his wife, Karen, Mark Fingerlin and his wife, Heather, Gerald Armstrong, and Hugo Clearwater; his aunts Marilyn Armstrong, Darcy Armstrong and her partner, Beverly Grisales, and Lois Crommelin; his great-aunt, Ella Armstrong; his nieces, Dana Goodknight, Kara Goodknight, Bethany Harris, Kelly Harris, and Sydney Menszak; his nephews, Maxwell Goodknight, Nicholas Goodknight, and Todd Menszak; his cousins Jennifer Roadcap and her husband, Trent, Amanda Nick and her husband, James, Krisi Davis, Justin Davis and his wife, Kim, Craig Armstrong and his wife, Charity, Rodney Armstrong and his wife, Brooke, Philip Armstrong; and extended family and friends.

His father, Ronald Armstrong, died before him, as did his paternal grandparents, William and Hilda Armstrong; his maternal grandparents, Lewis and Lois Fingerlin; and his aunt Dianne Clearwater.

A Service of Remembrance will take place at 11 a.m. on Monday, Nov. 14, at Mulder Chapel on the campus of the Warwick Center, 62 Warwick Center Road, Warwick, New York. Brunch will follow. Attendees are encouraged to bring nonperishable donations for The Food Bank of the Hudson Valley and/or The Humane Society of Blooming Grove. Interment of cremains will take place in the spring at Woodlawn Cemetery in Berne.

Memorial contributions may be made to the charity of the giver’s choice, or to groups advocating for “death with dignity” laws (such as www.deathwithdignity.org).