I don't have many clues to give but, I am hoping someone may know or thought the samething as me.

This was a male R&B or Pop group.

Had one song (as far as I know) that was acapella.

Radio used to play it all the time and then it disappeared.

I don't remember the lyrics but, the melody kind of reminds me between Shai "If I ever..." and All 4 One "So in love"

I want to say the group starts with a "P" kind of weird long name?

Please if this rings a bell to anyone please let me know, I've been wondering for a very long time.