WHITNEY HOUSTON’s ambitious daughter BOBBI KRISTINA BROWN plans to explode onto the music scene in a big way – by performing a duet with her late mom.

Bobbi Kristina, called Krissi by pals, is the music legend’s only child with ex-hubby Bobby Brown and believes her mother can still kick open doors for her. But some of her relatives are up in arms over her plan, say sources.

The troubled 19-year-old, who’s already been to rehab for drugs and booze problems, intends to lay down her own vocals over the track to her mom’s 1985 breakthrough hit, “Saving All My Love for You.”

“She appreciates that the song started her mother on the road to success and believes it can do the same for her,” a source told The ENQUIRER. “She wants to keep some of Whitney’s vocals on the track, and then add some of her own to make it a duet.

Natalie Cole did the same thing with one of her dad Nat’s trademark songs, ‘Unforgettable,’ and it wound up being the biggest hit of her career. That’s Krissi’s blueprint.”

But the aspiring singer’s aunt Pat and grandmother Cissy Houston believe she would be “making the mistake of her life” by attempting to use her mother’s fame as a shortcut to stardom, says an insider. They feel she needs to work with a vocal coach to hone her skills. What’s more, Bobbi’s voice is much huskier than her mother’s.

“They really don’t match up for duet purposes,” noted another source.

Despite the criticism, Krissi plans to record the duet next year, so long as she can secure the rights to her mom’s hit song.