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The Rock Mill is the culmination of a life long love of music of both our founders. Roscoe Justice and Jennifer Satterwhite have an intense love for music and are so happy to be able to bring this dream to fruition here in the middle of Historic Old Town Keller!


The Rock Mill provides a safe and fun environment for students of all ages to come and work on every facet of music performance. We have a state of the art recording studio with the gear and staff to do any level recording project you can imagine. We have multi-tiered lesson and band dynamics packages for all ages and experience levels. Whether you're a total beginner looking to get started or an experienced player needing to take your performance to the next level, there is a place for you here!

The People Behind The Music

Roscoe Justice

Founder of  The Rock Mill Music Academy

Roscoe has been performing onstage all his life, starting at the age of six. He began vocal lessons shortly after and was cast as the lead in several school musicals throughout grade school and high school, such as the Prince in Cinderella, and The Velveteen Rabbit, among others. By the age of eighteen he had also won two national vocal awards in classical and operatic performance. Roscoe came from a very musical family with several uncles who were accomplished bluegrass, country and gospel musicians. He began to pursue the guitar in his early teens and won several competitions with his first band Vas Deferens during high school, and later formed The Laid Law Union with whom he performed and toured with extensively for the next few years. Roscoe was then signed to a production deal with Mind Ignition LLC out of Cincinnati, Ohio, and formed The Roscoe Justice Band. He has opened up for and performed with several renowned recording artists such as Bonnie Raitt, Jackson Browne, Foreigner, Dr. Hook,and B.B. King. Roscoe has taught and administered in music schools in the DFW area since 2012, and with his partner Jennifer Satterwhite, opened The Rock Mill Music Academy in June of 2018.


Ezrie Katzen

Solo Artist Director
Producer & Engineer

Ezrie is an accomplished musician and performer who has played all over DFW with many different bands and collaborations. He has produced and engineered several EPs for regional artists and is currently working on several projects here at Rock Mill Studios for student artists, and local performers. Ezrie teaches guitar, bass, drums, piano, as well as music production. He is currently the director for the solo artist development program here at The Rock Mill, in addition to Rock Mill Studio's premier producer and audio engineer.

The People Behind the Music

Casey Justice

Curriculum Director
Music Instructor

Casey is originally from south Louisiana but has lived in the Fort Worth since 2011.  She earned her Bachelor of Music Education, vocal concentration, from Texas Wesleyan University in 2017.  While there she also studied piano, flute, conducting, and composition.  She has performed as a soloist and with school, church, and theater groups in both Louisiana and Texas, as well as directing ensembles of all ages.  Here at the Rock Mill you can find Casey teaching private voice, piano, and ukulele, and small group classes.

Alex Massey
Music Instructor

Alex was born in Northern California and raised in Fort Worth, Texas. Alex started playing drums when he was 12 years old and received professional training at 16 years old. He has played in several bands through out grade school and college, and toured in the lower 48, as well playing on several albums. Alex has a passion for teaching music and performing, and is the drummer for The Real McCoys who perform in the DFW area.

Aaron Toney

Band Director

Aaron started playing bass when he was twelve, and has since studied other instruments such as guitar, drums and piano. Aaron performs in a few projects around the DFW area and has played in bands and ensembles since he was 13. He has taught at The Rock Mill since they opened, but discovered his passion for teaching music back in high school as an intern at local music schools.

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Caylee Fuchs

Music Instructor

Caylee is currently enrolled at TCC, working towards her Bachelors in Music Therapy and aspires to attend Texas Women’s University. Starting at the age of 9, she grew up taking lessons and participating in band programs throughout the DFW area; studying instruments such as bass, guitar, and drums. Formerly a student of the Rock Mill, Caylee now pursues her love of teaching while actively participating in the local music scene. 

Willem Stewart

Music Instructor

Willem Stewart is a multi-instrumentalist based in Fort Worth, Texas. At a young age, he started to study guitar, piano, and percussion. He has played in various ensembles across the country and abroad, such as the University of North Texas drumline, the festival of winds and percussion, and multiple bands across the DFW metroplex. He has been teaching music for just over five years and is excited for more years to come.


Lorelai Weber

Music Instructor

Lorelai is primarily a vocalist but also has experience with various instruments. Lorelai has been involved In numerous music programs through out DFW and has been pursuing their love of music and performance since they were about 10. Through out high school Lorelai found their passion for music education through teaching vocal lessons and music theory.

Collin Smith

Music Instructor

Collin was raised in Fort Worth, Texas, living there for the majority of his life. He began playing guitar at the age of 13, and since then has studied instruments such as bass guitar and drums. Around the age of 18, he took up performing with different DFW projects, and in doing that found a passion for writing and performing music. He toured internationally in 2020, followed by US East and West coast tours in the following years. Collin has recently joined the staff at the Rockmill, and has an eagerness to pass off what he has learned to his students.


Jax Justice

Mascot and
the True Power Behind the Scenes

Who is Jaximillion Justice?

Jax is a complex personality, as are most of the small breed of modern day renaissance millionaire dog business owners. Jax enjoys disc retrieval, long walks on the beach, and a good steak bone from most upscale local DFW restaurants. Never one to shy away from hard work, Jax has indelibly become a cultural icon here at The Rock Mill. After a lengthy court battle with the estate of the late country star Randy Travis for his rap/country style cover of Diggin' Up Bones, Jax is ready to get back to what he does best... Catchin' names, and takin' Frisbees.



WE WON! The Rock Mill is proud to announce that we were named Living Magazine's Best Music School in Keller in 2020! Thank you so much for voting #BESTOF2020! Check us out at and in the August edition of the magazine!


The Rock Mill is proud to announce that we made Hulafrog's Most Loved list! This award is only given to family-friendly companies that receive the most votes from parents and the community.

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Society Life Magazine has named The Rock Mill in their "Tops in Tarrant" 100 Best in Industry. This award is only given to companies that received the most votes from the people in the community. 

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