Al Green wants to know who’s altering Walgreens marquees to honor him. We found the artist

The Rev. Al Green wants to know who’s cleverly altering Walgreens drug store marquees to read “Al Greens.”

The 74-year-old “Let’s Stay Together” singer posted a photo on Twitter one of those altered signs, along with an emoticon of a laughing face.

“Who did this?” he asked.

To answer the reverend’s question, a West Chester, Pa., street artist who calls himself Cassius King did that —and he’s just getting started.