![](https://i.ytimg.com/vi/_yADFkL0dak/maxresdefault.jpg)
You can easily
embed musical queues into your lesson to signal transitions, or certain routines / procedures, or as a discussion timer. If you have the music file (mp3, wav, etc.), you can upload and crop it directly using
https://mp3cut.net/.
If not, find it on youtube, then download it for free using:
http://www.youtube-mp3.org/. Then, upload and crop away.
For some pre-made cropped music, download this
Resource Pack I made for ActivInspire flipcharts.