Rudd hastily wrote a number of new songs, but to complete the LP they were forced to fall back on Rudd's back-catalogue, recording new versions of several Spectrum/Murtceps songs. The resulting album, Rock'n'Roll Scars, was mixed by the EMI recording engineer Geoff Emerick, who had worked with The Beatles. In January 1975, Ariel was expanded to a five-piece with the addition of New Zealand singer-songwriter-guitarist Glyn Mason. This line-up recorded only one single and lasted until early 1976. Lead guitarist Harvey James left to join chart-topping Australian pop band Sherbet in March, (he was replaced by keyboardist Tony Slavich) and drummer John Lee quit to join English band, Dirty Tricks, during Ariel's second visit to the UK in April. He was briefly replaced by Nigel Macara, who quit again in October 1976, to be replaced by Iain McLennan. Ariel continued to record and perform until July 1977, when they announced their break-up; they performed their farewell concert at the Dallas Brooks Hall in Melbourne on 31 August 1977; the show was recorded and later released on two LP's: Aloha; then Ariel Live!!-More From Before. After Ariel, Rudd moved into promotion and production for a time. He produced the debut album for Newcastle bands Daniel and Jab and demos for Jane Clifton (ex-Melbourne band Stiletto). Rudd and Putt later formed a succession of groups, in the 1980s — Mike Rudd's Instant Replay, Mike Rudd & The Heaters (both also with Tony Slavich) and the more electronically oriented W.H.Y. (Weird Harold and You), a drummer-less trio comprising Rudd, Putt and John Moon and featuring Weird Harold, an early but cantankerous drum-machine—but none achieved the same level of success as Spectrum or Ariel. Although Rudd was forced to withdraw from performing for several years due to the illness and subsequent death of his wife Helen, Rudd and Putt sustained an enduring musical partnership, including reunions of Spectrum during the 1980s, and a duo album in 1996, Living on a Volcano. A new three-piece incarnation of Spectrum, with drummer Peter 'Robbo' Robertson, debuted in the late 1990s as Spectrum Play The Blues with a CD Spill, which took them back to their musical roots. Ariel also reformed for occasional gigs with varying line-ups, including a final reunion of the 'Mark II' line-up with Harvey James and John Lee, which took place not long before Lee's untimely death in July 1998. Rudd, Putt and Robertson