Best Language for Speech Control

I am contemplating writing a speech-controlled music player app for android. I am experienced in writing PC applications, and wrote a rather sharp speech controlled MP3 player using VB in the 1990s. I have also used c, c++, and several other languages in the past, but I have zero experience with mobile app development.

My priorities are a fast, memory-efficient app with good command-&-control and dictation abilities (iPhone compatibility would be a plus, but I'm willing to write a separate app for iPhone if the android app goes well).

What language/framework would you recommend?