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, Women of Substance Radio, FEMmusic, and CanvasRebel.

In May 2024, Occam's Rose was featured by the Colorado Music Hall of Fame for their song and music video "An Evening In Spring" which discussed the important, but difficult topic of suicide with statistics and resources included. This was featured as part of the Colorado Music Hall of Fame's mission of improving musician wellbeing during Mental Health Awareness Month (May) and also during which Anastasia was named a mental health advisor for the organization as well.

Occam's Rose writes music with a story. Born from the idea that beauty often lies in clarity, Occam's Rose crafts music that challenges the status quo and cuts straight to the soul. 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. Their sound is multi-genre and has been likened to Florence + The Machine, Regina Spektor, Evanescence, and Thank You Scientist. 

The band 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 released their debut album "Call It Fate" on May 9, 2025 which has received press including an interview from In The Pit With Britt and an album feature by BuzzSlayers Blog. "The Ship Is Sinking" by Occam's Rose was also featured twice in 2025 on the Denverse Sampler.  

You can also catch them playing on iconic stages along the Front Range such as the Broadway Roxy 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

Recent Release

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    An Evening In Spring 4:03
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    All Your Demons 3:52
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    Drunk On Heartache 3:46
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    Cosmic Love (Re-Release) 3:21
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    Losing Sleep 6:01
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    Mister Amity (Re-Release) 3:41
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    The Solution 4:55
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    The Ballad of the Minotaur 4:34
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    G.F.Y 4:26
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Media Features

Previous events

Occam's Rose at Lost Lake

Occam's Rose at Lost Lake

Lost Lake Lounge, 3602 E Colfax Ave, Denver, CO 80206

Occam's Rose will be supporting Brittany Bridgewater, Dr. Lunch, and Jack Campbell & the Head Mess at Lost Lake! Occam's Rose will be on a line-up of horn-heavy powerhouses, Brittany Bridgewater and the Sparks, Dr. Lunch, and Jack Campbell & the Head Mess at Lost Lake! Each band is showcasing the often overlooked and misunderstood horn section for this fun "horn love" Valentine's show!

Line-up:

1) Jack Campbell & the Head Mess

2) Occam's Rose

3) Brittany Bridgewater and the Sparks

4) Dr. Lunch

$19.98

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Occam's Rose Birthday Show

Occam's Rose Birthday Show

Moe's Original BBQ

Celebrate Anastasia's and Peter's birthdays at Moe's BBQ with an all female-fronted show! Join us to celebrate Anastasia's and Peter's birthdays with friends from Elyse Therose, Becca Jay, and TempleTown Groove! Occam's Rose writes music with a story. Born from the idea that beauty often lies in clarity, Occam's Rose crafts music that challenges the status quo and cuts straight to the soul. 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, Evanescence, and Thank You Scientist, Occam's Rose aims to continue this legacy in their debut full-length album released in May 2025.

Denver-based Elyse Therose (Erin Elyse Jeffreys) creates a hybrid alt rock sound drawing inspiration from 90s alternative, post-hardcore, and synthpop. Her songs feature raw, emotional lyrics and explore experiences with relationships, self discovery, and mental health. While Elyse is the project’s sole writer, she’s joined on stage by friends Brian Loeper (Guitar), Adam Cogen (Bass/Keys), and Matt DiRe (Drums). Together, the four put on a dynamic live show combining the heavier rock sounds of Elyse’s self-titled EP with newer synth-driven tracks. Becca Jay: songwriter • creator • musician • activist • human 2019 SDMA nominated artist - Denver, CO TempleTown Groove is a Denver-based band performing an eclectic mix of original rock and funk jams. The band consists of singer/songwriter Lisa Templeton, drummer Jeff Templeton, Brazilian bassist Deny Dos Santos and guitarist David Goodman.

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Occam's Rose Debut Album Release Show

Occam's Rose Debut Album Release Show

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Larimer Lounge, 2721 Larimer St, Denver

Occam's Rose is releasing their debut album, "Call It Fate", which was recorded at the legendary Blasting Room in Fort Collins with the help of Chris Beeble (engineer, bass, producer). They will be accompanied by friends Pretty. Loud. and Becca Jay to showcase an entirely female-fronted band line-up!

"Call It Fate" demonstrates the duo's musical breadth and prowess showcasing nearly all the multi-instrumental magic they are known for. To bring to life the intricate instrumentation, they are going to be joined by friends and fellow musicians:

Alden Hoag (percussion & samples)

Deny Blanes (bass & guitar)

Erin Williams (percussion)

Melissa Rink (keyboard & vocals)

Sonia Dominguez (vocals)

Tim Sanchez (bass, percussion, & drumset)

Presales $15; Day of Show/At the Door $18

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Meet the Band

Anastasia

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

Anastasia wears many hats in life from small business owner to mental health advisor for the Colorado Music Hall of Fame 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.

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