GuitarApp provides a free instrument tuner widget which can be embedded directly into your Brightspace course using a simple iframe embed. Now your students can tune any instrument without leaving your course pages. You can find the iframe embed code for the embeddable tuner widget here. You copy the snippet and use the "Embed Stuff" tool in Brightspace to add it to your course page:

Our tuner offers the followig controls to your students

• Select from multiple instruments including guitar, bass, ukulele,violin, viola and cello.
• Select from different tunings
• Real-time tuning using the microphone on your laptop or mobile device
• Tap to hear each note 

Check out our embed guides for setting additional embed parameters such as instrument and tuning.

Live Demo:

<iframe src="https://guitarapp.com/tuner.html?embed=true&theme=light" allow="microphone" title="GuitarApp Online Tuner" style="width: 360px; height:520px; border-style: none; border-radius: 4px;"></iframe>