US release came on several "indie" and second-release labels - it came to Northeast markets via WTRY 980am and in vinyl on "The Savage Young Beatles" album.
The song was a regional hit in the Albany-Schenectady-Troy area on WTRY, and was greatly eclipsed in popularity by a 1:59 rendition of "The Night Before" that was played extensively on the station the fall/winter before a lighter version was released on the "Help" soundtrack. The WTRY copy was voted by listeners as "Best Beatles Song Ever." You have to hear it to understand why.
"Ain't She Sweet" charted in the Top Ten in the Northeast during the mid-60s within a small window between Beatles 45rpm releases. It too was recorded on June 22, 1961 at the Friedrich-Ebert-Halle, Hamburg, Germany with Pete Best on drums, and Bernard Purdie for drum overdubs... A different version was recorded in 1969 with Ringo Starr on drums, was released on The Beatles Anthology 3 and Paul as a singer.
*In Hamburg and the Beatles' Cavern days George did a fair amount of lead vocals!