Van Morrison [ tickets ] has lined up a few shows this summer as the Rock and Roll Hall of Famer moves away from "Astral Weeks" back to his typically ever-changing live shows.

The Irish singer/songwriter, who earlier this year finished a string of full live performances of his 1968 classic "Astral Weeks," will hit four cities on the brief outing, kicking off Aug. 4 in Boston. Following two nights (8/6-7) in Washington, DC, the performer will close out the slate Aug. 8 in Atlantic City, NJ. Details are included below.

On the studio front, the legendary Irish singer/songwriter scored the highest debut of his more than 40-year career with last year's "Keep It Simple," which bowed at No. 10 on The Billboard 200. The album, Morrison's 35th, is his first collection of all-new material since 2005. He composed all 11 songs and wore the hats of composer, arranger, lyricist and producer.

The record honors a wide variety of The Rock and Roll Hall of Famer's influences, including Celtic, jazz, folk, blues, country, soul and gospel. Several song samples from the set are streaming at his MySpace page.

In February, Morrison released "Astral Weeks Live at the Hollywood Bowl," which was recorded at the historic Los Angeles venue last November, almost exactly 40 years to the day after the seminal album's original release in 1968. A DVD version of the concert is scheduled for release April 7, exclusively through online retailer Amazon.