The Dead Milkmen return this week with the fourth in their new series of limited-edition 7-inch singles — this one’s called “Welcome to Undertown” — and you can now stream both songs off the vinyl single (the title track and “Streetlamps”) as well as the digital-only bonus track, “The Sun Turns Our Patio Into a Lifeless Hell.”

Due out Friday, the vinyl single is limited to a pressing of 500 copies, and will be available directly from the Milkmen. In October, the Milkmen released the first single in the new series, “Dark Clouds Gather Over Middlemarch,” and followed that up with “Big Words Make the Baby Jesus Cry” in December and ‘The Great Boston Molasses Flood’ this past March.

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