15 Mins. Mr. Regan, of very good appearance, is an Irish tenor. He landed strongly with the opening number, “When Kelly Sang Killarney,” and was Just as good with a number telling of an Irish lad who was buried ‘neath the poppies in France… There were two encores, with “Mother Machree” the finale… Mr. Regan has a selection of numbers somewhat different from the run of others, which helped make his songs more welcome. He is a singer of power and should win his way to the better bills with ease.
Variety, LVIII:2, June 3 1921.