Thin Lizzy are a hard rock band formed in Dublin, Ireland in 1969. Two of the founding members, drummer Brian Downey and bass guitarist and lead vocalist Phil Lynott, met while still in school. Lynott led the group throughout their recording career of twelve studio albums, writing most of the material. The singles "Whiskey in the Jar" (a traditional Irish ballad), "Jailbreak", and "The Boys Are Back in Town" were major international hits.

In late 1972, the band embarked upon a high-profile tour of the UK with Slade, who were enjoying a string of hit singles at the time, and Suzi Quatro. Around the same time, Decca released Thin Lizzy's version of a traditional Irish ballad, "Whiskey in the Jar", as a single. The band was angry at the release, feeling that the song did not represent their sound or their image, but the single topped the Irish chart, and reached no. 6 in the UK in February 1973, resulting in an appearance on Top of the Pops. It also charted in many countries across Europe. However, the follow-up single, "Randolph's Tango", was a return to Lynott's more obscure work, and it did not chart outside Ireland. The band's next album, Vagabonds of the Western World, was released in September 1973 following strong airplay in the UK, but again failed to chart. The accompanying single "The Rocker" also found little success outside Ireland, and the momentum gained from their hit single was lost. Eric Bell suddenly left the band on New Year's Eve 1973 after a gig at Queen's University Belfast, due to increasing ill-health and disillusionment with the music industry, and young ex-Skid Row guitarist Gary Moore was recruited to help finish the tour. Moore stayed until April 1974; the band recording three songs with him in that time, including the version of "Still in Love with You" that was included on the fourth album Nightlife. With the departure of Moore, Lynott decided to expand the line-up with two guitarists, and recruited two new members to complete a tour of Germany in May 1974. These were ex-Atomic Rooster and Hard Stuff guitarist John Cann, and Berlin-born Andy Gee, who had played with Peter Bardens and Ellis. It soon emerged that this lineup would be a temporary one, as Lynott and Cann did not get on well personally, and Gee was under contract to another record label. The tour was ended early when a disillusioned Downey quit the band and had to be begged to reconsider, at a time when Thin Lizzy's contract with Decca was coming to an end. Auditions were held for new members, and Lynott and Downey eventually settled on Glaswegian guitarist Brian Robertson who was only 18 years old at the time, and Californian Scott Gorham. The new line-up gelled quickly, dropped most of the old songs when they played live, and secured a new record deal with Phonogram, but the resulting album Nightlife was a disappointment for the band due to its soft production and underdeveloped style. Robertson described Ron Nevison's production as "pretty naff" and Gorham said the record was "ridiculously tame". Like the previous three albums, it failed to chart.

Answer the following question by taking a quote from the article: How successful was "Whiskey in the Jar"?
the song did not represent their sound or their image, but the single topped the Irish chart,