Let's remember that pygame is used by new programmers who don't necessarily know how or where to best ask questions. Providing guidance is great, but let's keep the tone friendly. Don't forget that written messages tend to sound grumpier/snarkier than you meant them to, so
it's easy for everyone to quickly get angry.
Teodoro, you're getting terse responses because you turned up to get help with a problem, without any evidence that you had investigated it or tried to understand the cause. If you've checked that timidity works outside pygame, mention that up front. Did you put the error message into Google as well? People will be happier to help if you show that you're trying to figure it out yourself. And your second message comes across as a bit demanding - no-one here has to help you.
Back to the problem itself: what platform are you on, and how did you install pygame? There are some problems using timidity with the Linux wheels, because the bundled copy of the timidity library uses a config file found on your system, and this might be for a different version of timidity: