Rock Band - Rock Band is a Rhythm Music and Single and Multiplayer video game created by Harmonix and published by MTV Games.

ChargeOver - ChargeOver automates recurring billing, subscription billing, & payment acceptance. A SaaS that integrates with Xero, Quickbooks, & has an API. Free trial.

StepMania - Rhythm game for Windows, Mac, and Linux.

fusebill - Fusebill is the leading recurring billing and subscription management software for businesses. Try Fusebill for subscription billing made easy!

Osu - Osu is Music, Rhythm, Single and Multiplayer video game developed by Dean Herbert.

MinuteDock - Web-based time tracking software designed to integrate with the Xero accounting package.