Play Music on Your Android When You Get Notified by a Specific App -

Connect

Create a personalized soundtrack for your day by triggering music playback whenever a favorite app sends a notification.

If

Notification received from a specific app

This trigger fires every time a new notification is received on your Android device from an app that you specify. NOTE: will not fire for IFTTT app notifications.

Then

Play music

This Action will play music on your Android device. The music played depends on your device and setup. Depending on your version of Android, playback may not start automatically.