So What is the third studio album by the American singer-songwriter and multi-instrumentalist Joe Walsh. It was released in late 1974 on ABC-Dunhill Records.
It contains hard rock songs such as “Welcome To The Club” and a remake of the Barnstorm track, “Turn To Stone”. It also contains more introspective material such as “Help Me Through the Night” and “Song For Emma”.
On a few tracks, Don Henley, Glenn Frey, and Randy Meisner of Eagles contributed backing vocals. Over a year and a half later, Walsh would be drafted into Eagles to replace founding member Bernie Leadon, playing on their best-selling studio album Hotel California.
Source: Wikipedia.