This is definitely possible, but with Toomp, you never know. He's known for putting his instrumentation on top of samples, then he'd mute the sample, change a note or 2, then he'd transpose the harmonic/rhythmic progression. This way, the piece literally becomes his. A prime example of this, would be Kanye's "Big Brother" instrumental. Toomp said Prince (originally) wouldn't clear the sample, but then he came back and said he'd clear it for 99.8% of the publishing, or some shyt like that. Toomp said when he was told that, he used the method I described above and ended up getting 100% of the publishing.