With “The Mixdown” wrapping up, you’re definitely not being left hanging. Magnetic Magazine and Complex TV have dropped the debut episode of “The Line Up,” your guide to the best clubs, festivals, and parties within the EDM scene. For the debut, they highlight Swimming With Sharks, an LA daytime party that focuses on nu disco and house, all by the poolside. If you’ve not hit this spot before, you need to. Check it out.