Re: how do you know if a sample can be pitched to fit in a song?
You absolutely need to learn a *little bit* about music if you expect to make anything halfway decent. If you got some melodic sample from somewhere (might as well make your own!), you're absolutely going to need to figure out what key it is in unless you try every possible combination of 12 half steps up or down. If you pitch a sample up that high or low, it might sound like crap after it's all distorted from the frequency conversion. One way to determine the key is to play a specific scale while the sample is playing, and listen and hear if it sounds like they go good together. So, play C Major on a keyboard, listen, and if it didn't work, move on to C# Major. You can look these scales up. Continue until you've covered all the major scales. Then, do the minor scales, C minor up to the next octave. Chances are your melody will be in the major or minor scale, or at least fit them if it's something like pentatonic. Once you've found the matching scale, pitch your sample up or down the number of half steps to match the key of your song. Look, if you just post the sample somewhere I will listen to it and tell you what key it's in. Pretty much the bottom line is that if you want to become a great composer and musician, you are going to have to train your ear. That means practicing scales (all of them), chords, arpeggios, modes, etc. for a couple thousand hours. I suggest getting an electric guitar and dumping your girlfriend.