George Gershwin left some songs unfinished.

And now — authorized by the Gershwin estate — Brian Wilson is going to finish them.

Todd Gershwin said a collection of several dozen song fragments, ranging from "a few bars to some almost finished songs and everything in between" had been sitting virtually untouched for more than seven decades. He and other trustees began reaching out in the last year or two to find contemporary artists who might be interested in completing those musical bits and pieces.

[Brian] Wilson, who says "Rhapsody in Blue" is his earliest musical memory, said the pieces he's working with are very likely to remain as instrumentals, and that they could easily wind up as three-minute pop songs. But he's also holding open the possibility of expanding them to more substantive pieces.

Wilson said many of them aren't easy to evaluate.

"I can't decipher the verse from the chorus from the bridge," he said, "so I'm going to try to insert some new music into them. I might even write some music for an introduction."