"Pamela" was written by David Paich and Joseph Williams for the 1988 Toto album The Seventh One. It was the first single from the album, and it peaked at #22 on the Billboard Hot 100 chart becoming their final US hit to date.

Paich had first written the chorus, music and words, including the name, "Pamela". Williams happened to have a girlfriend at the time named "Pamela", and had already written a song for her under the same name. The chorus of Williams's song was used in the bridge, and Williams wrote new words and melody for the verses as well. [SOURCE]

This would be Toto's final top 40 hit, how about today?