Glen Campbell was a great singer, and a great guitarist.
Here is a very pretty version of his beautiful hit song from 1968, "Wichita Lineman," written by Jimmy Webb.
The performance is from a PBS concert; I believe it was taped in 2001.
https://www.youtube.com/watch?v=rjzTNWWO7U0&list=RDrjzTNWWO7U0#t=28