Later that year Judith Durham joined the group and they focussed on the folk and gospel music boom, accompanying themselves on guitars, banjo and double bass. Keith’s ability to arrange harmonies for the group members was evident from these early days.
Taking up the 12 string guitar, he contributed the distinctive riffs that are a trademark of The Seekers’ chart topping recordings, "I'll Never Find Another You" and "A World Of Our Own", as well as many other singles and album tracks, augmenting the wonderful lead voice of Judith Durham and the boys’ ear-catching harmonies and instrumental talents.
When The Seekers disbanded in 1968, Keith’s musical activities turned to songwriting and record production in major recording studios in the UK. He collaborated with leading UK songwriters such as Tony Macaulay and Barry Mason and enjoyed chart success through the 1970s with British and American artists.
Returning to Australia in 1978, Keith wrote and produced television jingles and music tracks as well as performing solo concerts throughout the 1980s. In 1988 he wrote and produced stage musicals for the Australian Bicentenary.
In 1992 he reunited with Judith Durham, Athol Guy and Bruce Woodley to tour internationally as The Seekers for their Silver Jubilee. In 1997, the group released the Platinum-selling ‘Future Road’, which gave the public the first real chance to hear his song-writing talent on "Guardian Angel, Guiding Light", also co-writing "The Circle Of Love" (with Rick Beresford); "Forever Isn’t Long Enough (For Me)" (with Byron Hill); and the title track, "Future Road" (with Trevor Spencer and Boyd Wilson).
The Seekers have toured extensively as a group since 1993, but Keith continued writing and recording original songs. Keith released his first solo CD "Secrets Of The Heart" in 2004, followed by "Sunday" in 2007, with major solo concerts and festivals around Australia with his "wandering minstrel" style of performance. In 2010, he released his mostly self-penned third solo CD, "Smile Now", yet still enjoying collaboration on some titles with songwriters in Australia, the UK and the USA.
Accompanying himself on his trusty Maton 12 string and 6 string guitars, Keith’s solo performances include material from his solo CDs, Seekers favorites, along with songs and anecdotes from his long career in the music industry.
In June 2014, The Seekers concluded their UK and Australian Golden Anniversary tours and, along with his Seeker partners, Keith was awarded the Order of Australia (AO) for services to the Australian music industry and not for profit organisations.
Involvement with charities has always been important to Keith and he frequently performs at charity concerts within his touring schedule. He was Patron of the renowned children’s charity Variety WA from 2001/2009. Keith was Chair of Support Act Limited Victoria, the music industry benevolent fund with which he is still closely associated, being elected to the Board of Directors.
Keith is a Patron of the Motor Neurone Disease Association of Western Australia and a Celebrity Ambassador for Variety Victoria and Variety International.