In another case of R&Beef, singer Lyfe Jennings is taking a page out of Kendrick Lamar's book with an R&B version of 'Control.' Jennings called out Raheem DeVaughn Thursday for not participating in a "friendly competition" he issued to fellow crooners to see who has the best songwriting chops in the genre.

On Aug. 24, Jennings uploaded a video to YouTube called 'ABCs' and in the introduction challenged "a few cats he respects" -- Anthony Hamilton, Kem, Raheem Devaughn, Musiq Soulchild and Jaheim -- to a sing-off. "Yo, I think I got the best pen in the game, man, one of you cats prove me wrong," he says.

But things turned from friendly to potentially violent, according to Jennings tweets this afternoon. The singer revealed that DeVaughn not only brushed off his challenge, but had threatened him with "shooters." Jennings is laughing off the incident and not taking it seriously being that he is on parole. He was released from prison in 2012.

"Ok so Raheem Devaughn just told me he dont like me mentioning his name and he got shooters that love does that mean lil n----???" He continued, "My response was (excuse my french) "f--- you and yo shooters soft ass n----". That dude made me giggle. He must not know...he couldnt."

None of the other singers Jennings mentioned in the challenge have responded to the 'ABCs' song. But being that both DeVaughn and Jaheim are releasing albums in September, this might be helpful promo for them both. We'll let you know how this unfolds.

 Listen to Lyfe Jennings' 'ABC's'

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