
I think this is a normal note but I'm not sure. Why is this note like this? Can you explain it please?

I think this is a normal note but I'm not sure. Why is this note like this? Can you explain it please?
This piece of music has two voices. The note has two stems because the voices are playing the same note. It looks like the lower voice holds the note (hence the tie) while the upper voice changes in the next measure.