The outstanding lead guitarist and vocalist Jimi Slevin formed the short-lived Irish quartet Peggy's Leg in Dublin in 1972, alongside Jimmy Gibson (guitar, vocals), Vincent Duffy (bass) and Don Harris (drums, vocals). They were a talented and promising band who performed all over Ireland. In 1973, they were voted Best New Group, which led them to decide to record their own LP. They recorded their debut album Grinilla at Eamonn Andrews Studios in just two days in October 1973, produced by Basil Hendriques and the band. It was released in November on their own label Bunch Records with artwork by Tim Booth (who played guitar on some tracks with Dr. Strangely Strange), as a private pressing in a limited run of just 500 copies.

While many progressive rock bands of the early 1970s, particularly in England, relied on grandiose Mellotron and Hammond organ sounds, the two superbly harmonising Irish guitarists dominate the sound, acting, in a sense, as a counter-movement to the British prog scene. Alongside fast-paced heavy-rock passages, softer folk-rock-style sounds repeatedly provide moments of calm, ensuring that the lengthy compositions remain varied. Audiences and critics alike were enthusiastic by this idiosyncratic, fascinating work, which showed influences from rock, hard rock, folk and classical music. Despite this impressive debut, numerous line-up changes eventually led to the band’s break-up in 1975. Today, their only album is regarded as an ultra rare collector’s item.