Sometimes something is too fast to watch in detail on youtube. And youtube’s user interface is not suited to properly replay certain sections of a video; in this case: Don’t be so hot by Me and My Drummer to catch the chords. Snippz offers exactly that. Slow motion and jump marks for precise navigation.
[Update June 6, 2017] Snippz has just been updated to v2. More space for the video (image 1), which can even be zoomed. Less space for the timeline, which makes it a bit more difficult to edit the hot areas compared to v1 in the second image.