Struggling with the following - please can you help
12. Clown creator of a non profit non government organization that aims for social integration of vulnerable youngsters (6 5 “4”)
36. I find that singing and dancing is a direct path to joy. and i just wanted more of it that's why i wanted to make the film (8 8)
42 Featured on Ed Sullivan show in 1965 (7 3 7 8) (7 3 Russian Cossacks)
57. Found success as a child actor and later as a member of a rock and roll band but under two different names (6 8 (5 6))
42. Based on what you have mentioned in the clue, I wonder if the letter count should be (3,7,7,8) !!
If you scroll down the link to the second show (17.2) And go to the 2nd from bottom of that particular show you will see his guests are ....
"The Radugas (Raduga dancers) Russian Cossack"
http://ctva.biz/US/MusicVariety/EdSullivan_17_(1964-65).htm