DeAngelo Williams couldn’t resist singing for Pittsburgh Steelers quarterbacks coach Randy Fichtner last Friday.

And “Reunited” proved to be a fitting choice after the veteran running back did just that with Fichtner.

“I don’t know if he enjoyed my rendition,” said Williams, who played at Memphis when Fichtner was the offensive coordinator there, “but I thought it was pretty good.”

Williams hit all the right notes after signing a two-year contract with the Steelers.

Then again, so did LeGarrette Blount last year after signing with the Steelers.

He became fast friends with Le'Veon Bell and talked about the pair forming one of the top running back duos in the league. Blount got along well with his new teammates and seemed to accept playing behind Bell after sharing time with multiple backs the previous season in New England.

Reality hit once the season started and Bell emerged as one of the most complete and dynamic running backs in the NFL. His breakout season came at the expense of Blount’s playing time, and Blount did not last the season with the Steelers.

Will it be different this time after the Steelers signed another proven running back who is at least used to sharing carries?

The Steelers obviously think so after moving so quickly to sign Williams.

And the former Carolina Panthers back willingly signed up for what may be a most unusual role.

Williams could start the first two games of the 2015 season and get the bulk of the carries. But after Bell returns from an expected suspension stemming from an arrest last August for marijuana possession and driving under the influence, there will be limited snaps for Williams the rest of the way.

Bell, after all, is an every-down back who is just as important to the passing attack as he is the ground game.

“The sky is the limit for that guy,” Williams said of Bell, who turned 23 last month. “I just want to come in and help wherever I can to make us better as a team.”

It is easy to say the right things now, but there is one major difference between the signings of Williams, the Panthers’ all-time leading rusher, and Blount.

Blount joined the Steelers after Bell averaged just 3.5 yards per carry as a rookie. Blount clearly expected some sort of time share in the backfield with Bell.

Williams signed with the Steelers after Bell rushed for 1,361 yards and led all NFL running backs last season with 854 receiving yards. Williams has to know the offense will run through Bell, even with the credentials he brings to the Steelers.

Perhaps that is why Williams, who turns 32 next month, said he will accept any role with his new team.

“Whether that means me coming off the bench, giving the offensive line water, making sure (quarterback) Ben Roethlisberger’s towel is dry so he can wipe his hands and throw better,” Williams said. “Whatever it takes for us to win a Super Bowl, I’m willing and able to do it.”