He had a role in the sitcom Hello Mom, and small uncredited parts in the movies The Eddy Duchin Story (1956) and The Missouri Traveler (1958).

In 1959, the family moved again, to Inglewood, California, where he made the acquaintance of future Beach Boys members David Marks and Dennis and Carl Wilson, helping to teach them guitar.

They then met Scott Engel, who had been playing bass in The Routers, and, with drummer "Spider" Webb, formed a new band, Judy and the Gents.

Maus obtained an ID card in the name of John Walker, to perform in clubs around Los Angeles while under the legal age to do so.

Late in 1964, they met drummer Gary Leeds, previously of The Standells, who had recently toured the UK with singer P.J.

Before leaving, they recorded their second single, "Love Her", overseen by Nick Venet and arranger Jack Nitzsche, with Scott Engel taking the lead vocal part for the first time.

[5] Walker and Engel signed a new recording contract, and, with Leeds, began performing live in England, to considerable press attention and with growing numbers of - predominantly female teenage - fans.

Their second British number one, "The Sun Ain't Gonna Shine Anymore" in 1966, was their biggest hit in the US, where it made # 13 on the Billboard Hot 100.

We knew that we each had an important role, and felt responsible to each other, with one goal in mind, which was to make good records that were unique for the time.The Walker Brothers split up in early 1968, principally as a result of tensions between Maus and Engel, after a UK tour in late 1967 which featured Jimi Hendrix, Cat Stevens, and Engelbert Humperdinck, followed by a tour of Japan.

Later solo singles on Philips, and then on the Carnaby label owned by Mervyn Conn, were less successful, as was a 1969 album, This Is John Walker.

Two years later, he toured briefly with singer Jimmy Wilson and a backing group, as The New Walkers, before they split up.

He toured the UK again in 2009, as part of an "oldies" package,[1][2][3] and in 2010 with the Dakotas, whose original line-up backed Billy J. Kramer in the 1960s.