This weekend marks the 2nd annual All Points West festival, and Jay-Z (filling in for the Beastie Boys) is set to headline the first night at the Liberty State Park venue. What's the best way to warm up for a mostly indie crowd? Secretly join the lineup tonight for the pre-APW Diesel party going down at Webster Hall; the lineup features The Roots, Passion Pit and Drake. Blackbook says they have it on good authority this rumor's got legs, providing a detailed list as to why (Lykke Li fans, they also say she'll be stopping by)—#5 on that list claims, "an unnamed source close to the event says that Hov’s showing up to jam on a few songs at the end of The Roots’ set.“ Oh, and his sister-in-law, Solange Knowles, was already announced as a special guest. And a quick note for those heading to APW this weekend: the Observer talked to organizer Paul Tollet, who says the kinks should all be worked out this year—regarding the lines, he told them, “We felt there were a lot of things we didn’t like about last year. I walked around as a fan and stood in those lines, and when you go stand in that line, you get mad."