Cedar River Tech, LLC, is a creative web and mobile full-service company. We create solutions for education, music, and any business that needs a high-quality interactive digital presence.

CRT is the company behind Unison.School, a multi-faceted web portal for music educators, used by teachers around the world.

Interested in how Cedar River Tech can help your business? Contact tim@cedarrivertech.com.

Unison.School – About



Unison.School is a full-service teacher and student portal for elementary music classes.


  • Digital Instrument Studio
    • Xylophone
    • Glockenspiel
    • Piano
    • Recorder

  • Rhythmic and Melodic Builders with Playback
  • Automated Rhythmic and Melodic Assessments
    • Students can practice or take assigned tests
    • Select difficulty levels based on pitches and rhythms
    • Save to teacher gradebook

  • Teacher Tool Suite
    • Gradebook
    • Planbook
    • Class Calendar
    • Unit Lesson Plan Generator

Web Projects


Tim’s personal page and blog. Before becoming a software developer and launching Cedar River Tech, Tim was an acclaimed author, clinician, and mentor in elementary music education. His blog is a combination of tech and music education topics.


Used by hundreds of music teachers and their students, Unison.School is designed to make teaching easier, with a digital planbook, dropdown-menu lesson generation, and authentic rhythmic and melodic assessments that can be done during or outside of class.

Creative Sequence

Based on Tim’s series of music education books, Creative Sequence provides lesson templates and a searchable repertoire database, with integrated playable scores.


The Northeast Iowa chapter of the American Orff Schulwerk Association. Tim has been the webmaster for FIO for 12 years. We recently moved to Google Sites to allow more members to keep the site up-to-date, but Cedar River Tech is still the host, and writes custom pages, such as Paypal registration.