Quality Control Cofounder Pierre ‘P’ Thomas Improving After Heart Attack

Quality Control Music cofounder Pierre “P” Thomas — who helped build the careers of stars including Migos, Lil Baby and City Girls — is still recovering in the hospital after suffering a heart attack … but we’re told his health is improving.

A source familiar with the situation tells TMZ … P is still recovering at a Las Vegas hospital, where his health continues to improve.

As we reported … P was hospitalized Friday after suffering a heart attack and was being treated in the ICU.

Quality Control Music previously told us P was receiving medical care after his hospitalization … while asking fans to keep him in their prayers.

P cofounded Quality Control Music with Kevin “Coach K” Lee back in 2013 … helping build the label into a hip-hop powerhouse.