Basically this. Wolfie went through the material and wanted to put something together that was like the early days so that's where they went. He was very involved in how that album came together. Am I the only one who's read interviews and articles in the recent past? It's been noted many times by many people that the ONLY reason Ed agreed to tour and make a new album was to do it with his son. He didn't think any one was interested in hearing anything new from him, as evidenced in the lack of interest in 3. And he wouldn't be wrong. He was really wanting to move past the party band aesthetic and produce more "adult" skewing music, dabbling in more experimental ideas. He wanted a singer that had something to say other than wham bam Amsterdam. Hence the approach to Sass Jordan and Gary Cherone and others I'd imagine. So I'm sure there's tons of recorded music in that studio, pieces and parts, maybe some more fully formed than others... But it's not necessarily "Van Halen" music.I think maybe they all wanted an old school style VH album and since they had actual, old material, they used it.