"I Don't Know Why, I Just Do" is a song by Fred Alert and Roy Turk.

Raymond Antonini (born January 20, 1922), known as Ray Anthony, is an American bandleader, trumpeter, songwriter, and actor. He is the last surviving member of the Glenn Miller Orchestra.

Anthony was born to an Italian family in Bentleyville, Pennsylvania but moved with his family to Cleveland, Ohio, where he studied the trumpet. He played in Glenn Miller's band from 1940–1941 and appeared in the Glenn Miller movie Sun Valley Serenade before joining the U.S. Navy during World War II. After the war he formed his own group. The Ray Anthony Orchestra became popular in the early 1950s with "The Bunny Hop", "Hokey Pokey", and the theme from Dragnet. He had a No. 2 chart hit with a remake of the Glenn Miller tune "At Last" in 1952, the highest charting pop version of the song in the U.S.

In 1953, Anthony and his orchestra were featured when Helen O'Connell and Bob Eberly headlined a summer replacement program for Perry Como's CBS television show.

From 1953–1954 Anthony was musical director of the television series TV's Top Tunes, and he also appeared as himself in the 1955 film Daddy Long Legs.[3] In 1955 he married his second wife, actress Mamie Van Doren. Their son Perry Ray was born March 18, 1956. He then began expanding his own acting career. In 1956-1957 he starred in a short-lived television variety show, The Ray Anthony Show. Anthony also appeared in several films during the late 1950s, including The Five Pennies (in which he portrayed Jimmy Dorsey), and Van Doren's movies High School Confidential (as "Bix") and Girls Town. In the 1959-1960 television season, he guest-starred in the episode "Operation Ramrod" of David Hedison's espionage series Five Fingers on NBC. Anthony and his band appeared in the movie The Girl Can't Help It (1956). In 1957, Anthony and his orchestra recorded the music score for the film This Could Be The Night, with vocals performed by Julie Wilson.

After van Doren filed for divorce in 1958, citing cruelty,[6] they finally divorced in 1959, and Anthony's brief film career ended at about the same time. However, he continued his musical career and had another hit record with the theme from Peter Gunn, which reached No. 8 on the Billboard Hot 100 pop chart. Among his pianists was Allen "Puddler" Harris, a native of Franklin Parish, Louisiana, who had been a member of the original Ricky Nelson band, and Kellie Greene, who also played the vibraphone. Anthony's compositions include "Thunderbird", "The Bunny Hop", "Trumpet Boogie", "Big Band Boogie", and "Mr. Anthony's Boogie".

In the early 1980s, Anthony formed Big Band '80s, with other members of the band including Buddy Rich, Harry James, Les Brown, and Alvino Rey.

Anthony, who has been honored with a star on the Hollywood Walk of Fame, continues to be active as a bandleader and musician. His later works tended to break away from the Big Band jazz style of his earlier days, ranging from MOR and lounge music to blues, film and TB themes.

Anthony was a close friend of the late Hugh Hefner, and appeared in numerous episodes of The Girls Next Door.

I don't know why I love you like I do
I don't why I just do
I don't know why you thrill me like you do
I don't know why you just do

You never seem to want my romancing
The only time you hold me is when we're dancing

I don't know why I love you like I do
I don't know why I do, I just do

I don't know why I love you like I do
I don't know why, I just do