Theramins...
As has been mentioned, arrangement is quite important...
Radiohead also has a habit of having both lead instrumentalists (Jonny Greenwood and Ed O'Brien) play the same melody using slightly different phrasing. For example, Greenwood'll play something on a synth while O'Brien uses an Eboe or some whacky effect on the line, or O'Brien'll play the part in the background when Greenwood plays the line as 16th-notes...
Anyway. Love that band. Don't you, too, J. Hall? HA!