I tried the Sibley Guide to Birds. It is a really nice app. I especially like that you can hear the songs of each bird. There are way too few birds in the free app. I think I might actually splurge on the full app. I love to watch the birds at my feeder, but I am not really a "bird watcher." My dad was though and I wish he was here so that I could show this to him. He used to listen to the bird calls on an old record player we had!
I didn't know that Spotify was available for mobile devices. This is pretty great news. I have used it on my computer before. I am a country music lover and Spotify has a ton of it for me. When I play music in my library, I only play classical and mostly Mozart. I could arrange that on my iPad or iPhone, I suppose. It might take a little time, but I think I will try to put that together.