Judy Collins has inspired audiences with sublime vocals, boldly vulnerable songwriting, personal life triumphs, and a firm commitment to social activism. In the 1960s, she evoked both the idealism and steely determination of a generation united against social and environmental injustices. Five decades later, her luminescent presence shines brightly as new generations take inspiration from her spiritual discipline to thrive in the music industry for half a century. The award-winning singer-songwriter comes to Spruce Peak Performing Arts Center in Stowe on Saturday, July 20 at 7 p.m. Collins is esteemed for her imaginative interpretations of traditional and contemporary folk standards and her own poetically poignant original compositions. She has released more than 40 albums, has had numerous Top 10 hits, Grammy nominations and gold and platinum selling albums. Tickets are $35 to 55 at sprucepeakarts.org or 760-4643.