Best prog under 3 min/90 sec

The "short songs" thread in Prog Blogs makes me think it would be nice to have collection/poll of really short songs, so I start this thread for you to nominate songs (optimally with link) of which I then later will produce two polls. There are two categories:

Category 1 - max 90 seconds

Category 2 - between 91 and 180 seconds (3 minutes).

Here are my nominations (at least those I think of right now):

Category 1 - Art Zoyd has a number of albums that are split up into quite short tracks and I love what they do with those.

Category 2 - love that song!

I almost never hear of a reference to Stormwatch!

It's been a while... I have it on vinyl only.

A great Ozric track for Category 2.

Tough to find stuff for category 1 (tried to find something that sounded like a complete piece, rather than an excerpt from a concept album), but it turns out the original version of Frank Zappa's Pound For A Brown is exactly 90 seconds long. I do prefer the longer version from Zappa In New York, though.

Another Jethro Tull nomination for category 2 - Ian Anderson had quite a lot of short, mostly solo acoustic pieces, but I think Fire At Midnight really captures the sound of the full band in a short time-span.