Peter, Paul & Mary - If I Had A Hammer on Peter, Paul & Mary (1962)

"If I Had a Hammer (The Hammer Song)" is a song written by Pete Seeger and Lee Hays. It was written in 1949 in support of the progressive movement, and was first recorded by The Weavers, a folk music quartet composed of Seeger, Hays, Ronnie Gilbert and Fred Hellerman. It was a number 10 hit for Peter, Paul and Mary in 1962 and then went to number three a year later when recorded by Trini Lopez.

The Weavers released the song under the title "The Hammer Song" as a 78 single in March 1950 on Hootenanny Records, 101-A, backed with "Banks of Marble".

It fared notably better in commercial terms when it was recorded by Peter, Paul and Mary a dozen years later. Their cover of the song, released in August 1962, became a Top 10 hit. Trini Lopez's 1963 single went to number three on the same Billboard chart. It was included on his album, Trini Lopez at PJ's (Reprise R/RS 6093).