Ukulele, banjo, and hollerin' - the way to a gal's heart.

Note: the version beloow was sung by Gene Austin. Wikipedia:

With the advent of electronic recording, Austin, along with Rudy Vallee, Art Gillham, Nick Lucas, Johnny Marvin and Cliff Edwards, adopted an intimate, radio-friendly, close-miked style that took over from the full-voiced, stage-friendly style of tenor vocals popularized by such singers as Henry Burr and Billy Murray. Such later crooners as Bing Crosby, Frank Sinatra, and Russ Columbo all credited Austin with creating the musical genre that began their careers.

Austin sold 80 million records, and that ain't hay.

That "Thos. Waller" you might know by another name. Fats.