Nirvana’s Nevermind turns 20 on Saturday, which depending on your age and relationship with the album will make you feel either super psyched or super old. Or if you’re Geffen Records, you’ll obviously want to reissue it in multiple formats, ranging from a single remastered CD to a walloping “super deluxe” four-CD/one-DVD edition that goes for over a hundred bucks. Jessica Hopper reviewed the Nevermind mega-set for this week’s Reader, and she’s not very psyched on it at all: “Nevermind is a great record, but lord, what a boring thing to offer fans. There’s not even any fresh meat for the obsessive collector scum who go for this sort of thing. Yet this bottom-of-the-barrel commemoration also carries wonderful news: there’s nothing left to scrape up.”

In this week’s Sharp Darts I write about a new locally developed iPad app called Groovebug that finally offers a more exciting way to interact with your MP3 collection than iTunes’ “visualizer” mode. I also contributed to this week’s In Rotation, offering up a couple of recommendations, including the earplugs you need to own if you’re a regular showgoer; also chiming in are Blackbird chef de cuisine David Posey and Blackbird pastry chef Bryce Caron. Three Beats has news on local metal (the Atlas Moth), sound art (Nicholas Szczepanik), and a new live-music space in Logan Square (the Burlington). In Artist on Artist, Yakuza/Bloodiest/Led Zeppelin 2 front man Bruce Lamont interviews Swans leader and famously intense dude Michael Gira. In the Photo Pit we have pics from Shellac’s set at the Brilliant Corners of Popular Amusements festival last weekend. We’ve also got a quick guide to the best festival coming up this weekend, the Hideout’s 15th annual Block Party. And the latest Soundboard recommends shows by Black Star, Rwake, Ian Hunter, 40 Watt Sun, Beirut, and more.