Please excuse me for changing the song's lyrics but, "What a difference a year makes." Since my article in the second edition of iPhone Life, the App Store continues to grow with a wide range of offerings that could be useful to musicians of all stripes. During a recent music education and technology conference hosted by TI:ME (ti-me.org), I presented a session on mobile music making. When I saw another session being offered by music teacher, Matthew Harrington, focusing on iPhone/iPod touch music apps, I was concerned that we'd be covering the same titles. Surprisingly, we only overlapped on one app! For me, it illustrated the sheer number of apps available and the great work being done in the development community.