Bill Kopper is a Boulder, Colorado based guitarist known for his expertise in American Jazz and Blues, and Brazilian Samba and Choro.  Adept on electric, classical, and 7-string classical guitar (commonly used in Samba and Choro), he is featured on a diverse selection of recordings, from his own CDs "Samba de Chueca" and "El Oeste", to Jazz vocalist and 2017 Grammy nominee Rene Marie's CD "Black Lace Freudian Slip" and the soundtrack to her one-woman show "Slut Energy Theory", Brazilian pianist/composer Carmen Sandim’s 2019 Rope-a-Dope records release, Play Doh, the Samba/Pagode group Ginga's eponymous EP release, Choro Clarinetist Dexter Payne's discs "Pra Voce" and "Jazz For All", Vocalist Sonya Vallet's debut recording "Moments in Passing", Jazz Saxophonist Nelson Rangell's discs "Soul to Souls" and "American Songbook", trumpet master Brad Goode's "Polytonal Dance Party" and "Chicago Red", Peruvian songstress Cristina Mendoza Vidal's debut release, "La Aurora, Icaros from the Amazon" (a tune from that disc "Cayal" was featured on the enviro-doc "A Fierce Green Fire", narrated by Robert Redford, Meryl Streep, and Isabel Allende), among many others. He is currently an instructor of guitar at the University of Colorado/Denver where he has taught for the last six years, and divides his time musically among the Brazilian Samba/Pagode group Ginga, the Brazilian Choro/Forro group The Dexter Payne Quintet, the World Jazz group The Hip Richies, Brad Goode's Polytonal Funk Project, and Madrid-based vocalist Sonya Vallet's group Los Profugos Galacticos.