Occam's Rose

Classically-trained multi-instrumentalists, composers, songwriters, and performers

Occam's Rose is the amalgam of the unique music performance experiences, composition styles, and instrumentation of Anastasia Rose and Peter Rein Hirschhorn. Each are professional musicians, educators, and composers whose versatility allows them to write for and perform in virtually all settings from a small coffee shop to large concert halls to private events such as weddings and parties. Their style is alternative with a classical spin.

Anastasia and Peter, as individuals, are seasoned songwriters and performers having toured the country performing for audiences of over 20,000 as well as in their backyard of Denver, Colorado. Only months after Occam's Rose was formed, the duo embarked on their first tour as a project and also received accolades by the Dallas Music Network, Pick Simply, and FEMmusic. 

Occam's Rose writes music with a story. Each song the duo writes represents a moment fixed in musical time that is elaborated on through their intricate melodies, rich harmonies, and sophisticated rhythmic structure. Having been likened to Florence + The Machine, Regina Spektor, and Thank You Scientist, Occam's Rose aims to continue this legacy in their debut full-length album to be released in 2024. 

The duo worked tirelessly to release two separate EPs in the early part of 2023 to feature older recordings and an EP of brand new songs recorded in October 2022 at the legendary Blasting Room in Fort Collins, Colorado with Chris Beeble (engineer).


Occam's Rose will be returning to The Blasting Room for the recording of their full-length album in January 2024. Until then, catch them playing on iconic stages in the Denver metro area (such as the Broadway Roxy, Larimer Lounge, and the Lyric Cinema), restaurants, breweries, ice cream shops, and even the Denver Zoo! 

"Extremely fun and entertaining! Occam's Rose combines both unique and familiar melodies to foster both joy and laughter while stirring deep emotional connections."” - Eric Pearson, fan

Photo credit: Bee In Your Mind Photography

Previous events

Meet the Band


Voice, piano/keys, guitar, French horn, trumpet, melodica, auxiliary percussion

Anastasia wears many hats in life from small business owner to Colorado Musicians Union Womxn's Committee Leader to public speaker on top of her songwriting and music performance. Having played piano for over 25 years, she is no stranger to the music industry and has performed for crowds of over 20,000.

Anastasia's classical influences include Maurice Ravel, Claude Debussy, and Bela Bartok teaching her the importance of rhythmic vitality and the beauty of impressionism. Her modern and pop influences include Regina Spektor, Elliott Smith, and Florence + the Machine showcasing emotionally moving and cathartic songwriting styles.


Percussion/drumset, guitar, keys

Peter Hirschhorn (b.1994) graduated from Colorado State University in 2017 with degrees in Music Composition and Percussion Performance. He began learning piano when he was six, guitar at nine, and switched over to studying percussion when he was 11. He has performed in a variety of classically trained ensembles including high school and college marching bands, concert bands, wind ensembles, percussion ensembles, and orchestras, and the Blue Knights Percussion Ensemble. Peter has written music that has been performed by a number of various ensembles across the state of Colorado. He has been teaching and writing for high school percussion since 2014, and has given clinics and private lessons for students ranging from beginning elementary through collegiate levels. 

Peter is currently performing with the ska/punk band Then I Fly as their drummer and is the percussionist/multi-instrumentalist for the alternative duo, Occam’s Rose. He is a percussion instructor at a couple local high schools and enjoys spending time with his cat, Thalia.