The singer appeared to be in good spirits as he sang for the 7,000-strong crowd at Mohegan Sun Arena in Uncasville, Connecticut.
"I want to give blessings to my ex-wife, Whitney Houston, I love you. I want to give blessings to my kids, my fiancée [Alicia Etheridge], my brothers, and each of you," he told the crowd, according to USA Today.
Before performing his track 'Hit Me Off', he added: "And if you didn't already know, I go by the name of badass Bobby Brown."
Later in the show, he confessed: "I lost three great people in my life in the last year, but nothing makes me happier than to be here with you."
The 46-year-old was later spotted at Mohegan Sun Casino with a large entourage, and called over a police officer after being followed by the photographers.
Brown released a statement following his early exit from Houston's funeral, stating that security refused to let him see daughter Bobbi Kristina and changed his family's seating arrangements three times.
"In light of the events, I gave a kiss to the casket of my ex-wife and departed, as I refused to create a scene. This was a day to honour Whitney. I doubt Whitney would have wanted this to occur. I will continue to pay my respects to my ex-wife the best way I know how," he said.
More Whitney Houston coverage:
> Whitney Houston funeral takes place in New Jersey
> Whitney Houston 1963-2012: Reactions
> Whitney Houston 1963-2012: Obituary
> Whitney Houston: A life in pictures
> Whitney Houston: Greatest musical achievements - pictures
> Bobby Brown: "I love you, Whitney"