Yung Berg showed proof that he in fact produced a song for Tamar Braxton after the "Braxton Family Values" star allegedly called him a liar. The song Berg is referring to is Tamar's "The One," from her Love & War album, which she spoke about during an interview with Rap-Up. 

After Tamar posted an Instagram message that subliminally touched on the subject, Berg was quick to post the Rap-Up interview that featured Tamar saying that the "Sexy Lady" rapper produced her track. 

Hit the above slide to view Tamar's initial Instagram message and the interview that Berg posted. 

Source: bossip.com