<P> The next two and a half years proved to be the most challenging for the band . In the three albums they released in this period, they constantly changed line - ups . In September 1972, the band added guitarist Bob Weston and vocalist Dave Walker, formerly of Savoy Brown and Idle Race . Bob Weston was well known for playing slide guitar and had known the band from his touring period with Long John Baldry . Fleetwood Mac also hired Savoy Brown's road manager, John Courage . Fleetwood, The McVies, Welch, Weston, and Walker recorded Penguin, which was released in January 1973 . After the tour, the band fired Walker because his vocal style and attitude did not fit in with the rest of the band . </P> <P> The remaining five carried on and recorded Mystery to Me six months later . This album contained Welch's song "Hypnotized" which got a lot of airplay on the radio and became one of the band's most successful songs to date in the US . The band was proud of the new album and anticipated that it would be a hit . However, things were not well within the band . The McVies' marriage at this time was under a lot of stress, which was aggravated by their constant working with each other, and John McVie's considerable alcohol abuse . During the tour, Weston had an affair with Fleetwood's wife, Jenny Boyd Fleetwood, the sister of Pattie Boyd Harrison . Courage soon fired Weston and the tour was cancelled, so due to lack of touring, the album sold less than its predecessor . </P> <P> In 1974, the band's manager, Clifford Davis, then claimed that he owned the name Fleetwood Mac, and recruited members of a band called Legs (which had recently issued one single under Davis' management) to tour as Fleetwood Mac . </P> <P> The fake Fleetwood Mac consisted of Elmer Gantry (vocals, guitar), Kirby Gregory (guitar), Paul Martinez (bass), John Wilkinson (keyboards) and Australian - born drummer Craig Collinge (formerly of The Librettos, Procession and Third World War). The members of the fake Fleetwood Mac apparently had been told that Mick Fleetwood would join them on later dates, and claimed that Fleetwood had been involved in the early planning stages of the tour before dropping out . </P>

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