The Ink Spots
The Ink Spots were an African-American vocal group who gained international fame in the 1930s and 1940s. Their unique musical style led to the rhythm and blues and rock and roll musical genres, and the subgenre doo-wop. The Ink Spots were widely accepted in both the white and black communities, largely due to the ballad style introduced to the group by lead singer Bill Kenny.
The song is one of the most famous songs of the Second World War era, and resonated with soldiers going off to fight for their families and sweethearts. The assertion that "we'll meet again" is optimistic, as many soldiers did not survive to see their loved ones again.
That's the flipSide