Complex sentence: The multi-talented Alpert has also created abstract expressionist paintings and sculpture over two decades, which are on occasion publicly exhibited; and he and his wife are substantial US philanthropists through the operation of the Herb Alpert Foundation.
Split into simpler sentences: The multi-talented Alpert has also created abstract expressionist paintings and sculpture over two decades, which are on occasion publicly exhibited. He and his wife are substantial philanthropists through the operation of the Herb Alpert Foundation.