[Haskell-beginners] bugs or lack thereof

I love Haskell for the fact that my programs have relatively few bugs other than typos or obvious mistakes in types that the compiler catches. I just wrote about 100 lines of code to do a fairly complex task, which is to make a map of changing loudness in a musical document (including slopes, not just flat level changes) and after I got the typos out and it compiled, it just worked. I have been a professional programmer in imperative languages for 20 years, so I can think pretty accurately about what I am doing, but I'm new to Haskell, and it's a marked difference in the ease of getting something to work right. Dennis