Some on Twitter think Trump sang the national anthem incorrectly. Watch for yourself

The College Football National Championship has only just begun, and Twitter is already on fire.

That's because President Donald Trump came onto the field to a mix of cheers and boos before singing along to Zac Brown Band's performance of the national anthem.

Trump stood on the field and sang the anthem with his hand over his heart. The TV broadcast didn't pick up what Trump was singing, but Twitter already made up its mind: the president didn't know the words to the anthem.

See for yourself how people reacted to the president's singing along to the anthem:

There were also people who took pride in the president's appearance at the game and reciting of the anthem:

Andrew Clark is a digital producer for IndyStar. Follow him on Twitter @Clarky_Tweets.