She said Clegg, who was her age, used to call her Ndlovukazi, as she was the only female vocalist in the band.
Five weeks ago, the Asimbonanga star celebrated his final birthday on June 7 before succumbing to a long battle with pancreatic cancer. He was buried a day after his death.
"Working with Johnny was such an experience that I will forever hold in my heart," she said.
Dlanga said that Clegg was a teacher at heart and they were never bored while on tour.
"He had all the knowledge and exciting information ... There was no moment where he was moody," she said.
"When I said mfowethu [brother] to him, I meant it. He was always there for me. It really feels like the end," she said.
Among some of the artists who attended the service were his longtime friend and Juluka band member Sipho Mchunu, Sjava, Sipho "Hotstix" Mabuze and John Kani.
Besides his musical prowess, Clegg was credited as being an anti-apartheid activist by disregarding the segregationist laws of the past and openly socialising with black people.
"He was an anthropologist that used his music to speak to every person. With his unique style of music he traversed cultural barriers. In many of us he awakened awareness," said his manager Roddy Quin.