Irish vocalist and pianist, Tommy Drennan was an eleven year ago boy soprano when his rendition of "Oh, Holy Night", at Mount St. Alphonsus Church, was recorded in 1953. Stored in an old suitcase for nearly two decades, it was restored by Drennan and recording engineer, Ray Heraty, with a second verse added. When the demo tape reached executives at EMI, in Dublin, Drennan was summoned to the recording studio, where he recorded the new verse with an orchestra. Combining the old and new recordings, a single was released in time to capitalize on the Christmas season in 1972. An instant hit, it spent five weeks at the top of the Irish music charts.
The success of "Oh, Holy Night", was only milestone in Drennan's musical career. Displaying talent at a young age, he sang between films at Presentation Convent, at the age of ten.
Born and raised in Janesboro, Ireland, Drennan studied classical singing with Mrs. Baker. Relocating to Limerick, he sang with the Gilbert and Sullivan and Limerick Operatic Societies and studied at the city's academy of music.
Supporting his meager income from music by working for a travel agency, Drennan lobbied successfully for a transfer to their Dublin office. His talents were too evident to be hidden in a sales office. Soon after his arrival in Dublin, he was asked to host and play piano on a UTV show, Teatime With Tommy.
Drennan's days as a soloist came to an end, in 1963, when he was invited to join a northern Ireland-based showband, The Freshmen. Accepting the invitation, he spent the next year touring almost non-stop.
Meeting Jim Connolly, the director of a rural re-settlement project in County Clare, who had formed a band, the Monarchs, with Ray Herarty, Bryan Meehan and Frank Hogan, Drennan found the musicians to make his music come alive. During the eight years that they worked together, Drennan and The Monarchs reigned as one of the top showbands on the Emerald Isle, releasing such hit singles as "Boolavogue", "The Promise And The Dream" and "Love Is A Beautiful Song".
Forming a new group, The League, in 1972, Drennan turned his attention to the cabaret and corporate-function scene, four years later.