This may be obvious to everyone but me. My reading skills are lacking. The following excerpt is in 4/4 time, but it seems the notation doesn't add up to 4 beats. I'm reading it as four 1/2 notes with two flags each, which would be 1/8 notes each? If there are four 1/8 notes in the measure, the total for the measure falls two 1/4 notes short of 4/4. It all makes my head hurt. I can play it so it comes out, but I don't really understand the notation. A cellist explained it to me, but I didn't get it. My teacher is not available.