Olivia Newton-John's song Magic was displaced from the top by Sailing, which is by what American singer-songwriter from San Antonio, Texas?
Magic (Olivia Newton-John song): "Magic" is a 1980 song performed by Olivia Newton-John, from the soundtrack to the film "Xanadu". Magic (Olivia Newton-John song):  On August 30, it was displaced from the top by "Sailing" by Christopher Cross. Christopher Cross: Christopher Cross (born Christopher Charles Geppert; May 3, 1951) is an American singer-songwriter from San Antonio, Texas.
Christopher Cross