Hi, The only way to play sounds in Android, afaik, are either using media player or using JET content. However both of these use precreated sounds to play. What I am looking for is for some way to just start from one sound and then, during playback to modify its pitch and maybe loudness. So, say I have a bar that I can move left right and a sound that constantly plays in the background. The more I move the bar to the right, the higher the pitch of the sound becomes. Since this should be a continuous motion I don't think a prerecorded sound would be enough. Maybe using JET content in some smart way might work, but then there would be jumps in the pitch.