Provide capability to add pre-recorded/non-voice custom sounds and configure Alexa to use them as utterances/prompts/components within skill
Configure Alexa to recognize custom/programmable non-speech/non-voice sounds such as notes, doorbells, etc. and use them as components (utterances, etc) within custom skills.
Gregg Runkel commented
In my case, routine woud play a chime when door sensor opens