Lead Singer- Learning the song

I have decided that in preparation for filming my music video, I have given the person who is playing the lead singer, Callum, the song in advance so that he can learn the words properly and practice miming to it in time. The idea is that when it comes to the day o filming the performance part of the music video. He won't find it difficult singing and performing and playing an instrument at the same time. It will also be easy for me to film him with his mouth moving in sync to the track playing over the top of the video unlike some of the problems I have had in the past when filming miming parts and it can go smoothly without any interruptions or problems.