Answer by taking a quote from the following article:

Johnny Young (born Johnny Benjamin de Jong; 12 March 1947) is a Dutch Australian singer, composer, record producer, disc jockey, television producer and host. Originally from the Netherlands, his family settled in Perth, Western Australia in the early 1950s. Young had a career in the 1960s as a pop singer and had a number one hit with the double-A-side, "Step Back" and "Cara-lyn" in 1966, and his profile was enhanced by a concurrent stint as host of the TV pop program The Go!!

After Young Talent Time, Young continued in entertainment, he worked as a radio disc jockey and occasionally performed live. In 1999 he produced Cavalcade of Stars for Foxtel including repackaging segments of Young Talent Time and showcasing new Australian bands.  In December 2000, Young relocated to Perth to become the breakfast host on Perth AM station 6IX. During 2001 to 2004, he periodically performed with Rowe, Buddy England (ex-The Seekers, The Mixtures) and Marcie Jones (Marcie and The Cookies) as the 'Legends of Sixties Rock' at venues across Australia - all four had appeared on The Go-Show. While living in Perth, Young established a new outlet for his Johnny Young Talent School franchise. In 2001, the 30th anniversary of Young Talent Time was celebrated by Network Ten with a special documentary, Young Talent Time Tells All, which was followed on 4 November by a reunion party for former cast members. Young attended with his daughter Anna - who had appeared on the show. Back in Perth, Young hosted The Pet Show on ABC Television in 2006.  On 27 October 2010, Johnny Young was inducted into the Australian Recording Industry Association (ARIA) Hall of Fame. On news of his impending induction Young said "I have always felt like the luckiest kid on the block to be able to continue working in the music industry for 50 years in so many areas when basically I am just a rock and roller. To receive this honour is the cherry on an amazing cake. I am very grateful to all those who supported and encouraged me." Young was inducted by Tina Arena, a former Young Talent Team member, who performed his song, "Here Comes the Star" as a musical tribute. Contemporary pop group, Short Stack performed Young's version of "Cara-Lyn"

did he do anything after the breakfast host?
Young hosted The Pet Show on ABC Television in 2006.