A free app for Android, by Sony Corporation.

App Remote is a fully integrated, voice-controlled, music streaming service, which is compatible with Sony audio systems such as car audio and home audio. App Remote allows you to play your music from a variety of sources such as your smartphone, tablet, or computer. It also allows you to control the playback of these sources with a voice command. 

How to use App Remote:

Once you have it installed, all you have to do is speak to it. The App Remote will then recognize the command and play the desired music or application. 

In the first mode, you can use the voice command to play your music or application.