Google Home brings most of Google's awesome voice commands to your living room, but it also has a couple of tricks of its own. For example, you can use it to play musical notes so you can get in tune.
As highlighted by Android Police, Google Home can respond to a few musical commands. Ask it "play an E flat" and it will play six octaves of the note you request. If the note isn't flat or sharp, you may have to add the word "note" to the end, as in "play a B note." The site also points out that this may work on Google Assistant on the Pixel, but it's a little finicky and might not always work correctly.
This feature is a little handy, but it isn't perfect. Sometimes it misinterprets the command and starts playing music. It also can't play scales, or anything more complex than a single note. Still, it's a handy little trick to have around for the musician in your family.