The six notes are sampled from a Martin acoustic guitar. When you pass your mouse over the applet, you'll see a highlighted area and hear an audio clip. Source is included, making this a great tool for learning Java. Free Java applet for online spectrographic sound synthesis and analysis. This free applet lets you use your computer keyboard like a music keyboard.
Source is included and has notes hard-coded in it.
Radio Radio is a slick little applet which enables visitors to your site to play six different .au files. Plays foreground and background sounds. Educational and fun to play. See the music being written as you play, and play back your compositions. In this tutorial Johannes Wallroth gives a series of fairly simple examples in order to enable you to get a grasp of the possibilities and the syntax of the Java language.