Men sing in unison on this song. To avoid any temptation to sing it too heavily, Klingon-fashion, here is how Swami Kriyananda renders it:
Note: this is the descant part marked “Bass” in the score, but which is often (usually?) sung by the tenors as it is quite high. Otherwise, tenors sing melody. In the Virge version, watch out for errors in timing. Where Has My Love Gone? (David Eby)
— see virge parts near the end of the linked page.