Ah, Beck, if your mind is elsewhere it has reasons for being there so follow it.

THE THREE TENORS and THE THREE STOOGES

The third time is a charm, the three pots of gold on a slot machine wheel makes a jackpot, but airplane crashes and train wrecks come in threes too. Gestalt psychologists say our penchant for threes is our attempt to order a chaotic Universe, but maybe we just like things in "threes". I can think of ten or so trios of entertainers I like. Two can be found above, can you find them