Hello, I'm totally new to Haskell. I'm thinking of using it for a personal project, which is a gui-based musical score editor. (*) Why Haskell? I've always been interested in proving my software's correctness, usually in practical and informal sense. In other words, I would like to reduce bugs by having a really good understanding of what my software does. I also just want to learn Haskell. Before I invest a lot of time in learning Haskell, however, I want to understand if it's the right language for doing a gui-based musical score editor. First of all, I need a gui toolkit of some sort, and I notice that bindings to Qt exist. I'm already very familiar with Qt, so that's good. I also need to access the Windows midi api, and I see there is a module called hmidi. However, a gui program is essentially event driven and heavily interacts with the outside world. I don't know how compatible these ideas are with Haskell. If I don't use Haskell, I will probably use Python, which I already know well. So basically the question is: Haskell or Python? Note: I would enjoy learning Haskell, so this is not a question of which language is better in an absolute sense... if Haskell is suitable, but not the best choice, I will still probably use it. Thanks, Mike (*) For those who ask why I'm doing my own music score editor when many already exist, it's because it needs to be integrated with my own computer-assisted composition system. As an editor, it will be primitive: that's not its main purpose.