I tried copying the melody line to the soloist track, but still didn't hear the melody on the iPhone. Can someone please point me in the right direction - for example, how do I use the MIDI synth just for the melody and Real Tracks for everything else, and then how do I get that particular rendition onto the iPhone?

Similarly, I am confused as to when the iPhone app will generate a Real Tracks solo for a song. I press Settings-Patch, and then assign a sax (for example) where it says Real Soloist. However, sometimes a nice sax solo will be played (once I regenerate the song on the iPhone), and other times nothing. Am I doing something wrong?

Thanks again, everyone, for your help and patience.