Twilio MP3 playback tree

Need to develop a solution using Twilio to playback MP3 recordings on demand. Currently I have one MP3 message per phone number.

Need a way to have one phone number and then an option to select one of multiple MP3 to playback by keystroking in a code (i.e. 101 for “MP3 1”, 102 for “MP3 2” etc.). The MP3 files are hosted on the twilio assets page. I want this to kind of be like a phone tree for a business but instead of dialing to an extension for a person I want the extension to be MP3 playback.