Eddie Van Halen and Toto were key components of Michael Jackson's Thriller

A new cd with various bonus tracks was recently released to celebrate the 25th Anniversary of Thriller. I had no idea that the "core of Thriller's music was executed by members of Toto" (link), or that the "uncredited guitarist who whipped out the fluttering, squealing solo on [Beat It] was Eddie Van Halen, whose extracurriculars ranked among the provocations for singer David Lee Roth's 1985 departure from the megalithic rock band Van Halen" (link).