Here are the ways to enable ALT.
If you are in front of your Amazon Echo or Echo Dot, say “Alexa, enable alt ninety nine five”.
You can also search for “ALT995” on the skills section of your Alexa App.
Going through the Amazon site is also another way to enable ALT 99-5 by clicking HERE.
Once enabled, you can say “Alexa, play ALT ninety nine five”.