On the existing tapes for these sessions, McCartney's presence cannot be verified, and it is unclear if any record of his performance has survived. Archivist Craig Slowinski, who assembled the sessionography included with "The Smile Sessions" box set, stated: "I was ready to credit Sir Paul with 'veggie munching' ... but since no tapes were found with his voice or reference to him, we figured I'd better not. Too hard to say that any veggie munching on his part remained on tape through the final stages of production." "Sessions" co-producer Mark Linett explained: "Unless Paul is being very quiet, there’s no evidence that he’s a part of the chomping. And there’s quite a lot of discussion going on while that particular track is being recorded."