Not much is shown in these drum fills lessons but I liked it a lot, why? Because Thomas has really nailed the problem with drum fills here. Drummers tend to over-fill and they lose much of their groove in the process. When everybody in the audience is following the beat and bobbing their heads (just like the sea lions have recently learned to do!) a drum fill may sound like an unwanted distraction. So, never indulge in your fills drummer boys and girls!