I bought this as a way to "test the waters" for Bloom and Trope, the other Opal Limited music applications, since it is the cheapest of the three. Im a long-time fan of Enos style of ambient music and Air provides a nice, albeit basic, mix of textures and patterns - with a sleep function - that lets you block out the distractions of the world and find some inner calm and peace. Its a great accompaniment to chores large and small - in "listen" mode - and also a good way to relax at the end of the day - in "conduct" mode. My experience with Air will almost certainly lead to the purchase of Bloom and Trope (although I may wait until I get an iPad and go for Bloom HD). Definitely worth $1.99 if you like "Music for Airports". If you find ambient music annoying / pointless, stay away and save your money tho...
Sean Corfield about Air