THIS DAY IN MUSIC……………………………………….on December 20th of 1969 after scoring a pair of number 2 singles in 1963 with “Puff the Magic Dragon” and “Blowin’ in the Wind”, Peter, Paul And Mary attain their first and only US number one hit with “Leaving On A Jet Plane”. This was written by a very young John Denver, who was then a member of the Chad Mitchell Trio before beginning his solo career in the 1970s. Denver wrote this in 1967 during a layover at Washington airport, “Not so much from feeling that way for someone, but from the longing of having someone to love”. The Chad Mitchell Trio recorded the song that year, as did Spanky & Our Gang and Peter, Paul and Mary. It only became a hit when the latter act covered the song again two years later. The 1969 hit version by Peter, Paul and Mary came at a great time for Denver, who had just disbanded the Chad Mitchell Trio. Denver became the senior member of the group when Joe Frazier and Mike Kobluk left (Denver replaced Chad Mitchell, chosen in an audition that drew about 300 singers), but had no name recognition. Some of his first solo appearances were billed as “John Denver, writer of ‘Leaving On A Jet Plane’.” Known for this song, Denver got some club appearances and TV gigs, which helped launch his career as one of the biggest-selling artists of the ’70s.Denver claimed that he wasn’t a prolific or systematic songwriter – he wrote songs when they came to him. Some of his popular songs took months to complete, but this one took him just a few hours to finish. The folk ballad reached #2 in the UK.