So What was by the singer-songwriter who was drafted into the Eagles to replace the multi-instrumentalist who had what musical background?
So What (Joe Walsh album):  Over a year and a half later, Walsh would be drafted into the Eagles to replace founding member Bernie Leadon, playing on their best-selling studio album "Hotel California". Bernie Leadon: Bernard Mathew Leadon III (pronounced "led-un"; born July 19, 1947) is an American musician and songwriter, best known as a founding member of Eagles. Bernie Leadon:  He is a multi-instrumentalist (guitar, banjo, mandolin, steel guitar, dobro) coming from a bluegrass background.
bluegrass