In any many ways, this drastically different career move by Roizen (pictured here)–who was most recently a partner at Mobius Venture Capital, which recently decided not to raise another fund–makes perfect sense.

VCs are always looking for entrepreneurs with passion to invest in and Roizen had a lot of passion, as it turns out, for filling a need in a potentially lucrative marketplace by penning songs herself.

The switch from investor to songwriter came, the 49-year-old Roizen said, when she wanted to lose weight and could not find decent songs to give herself a better frame of mind to shed pounds. Most of what was out there, she said, was either badly made or flat-out depressing.

So, she decided to create something very different with a whole 10-song CD called “SkinnySongs.”

That meant more upbeat ditties that Roizen–who has also been an Apple exec and a software entrepreneur–wrote, with titles like “Skinny Jeans” and, yes, “I’m a Hottie Now.”

Before all of BoomTown’s male readers run for the hills, let me say I was also dubious about the songs. But after listening to them, I found I actually liked several of them, especially because Roizen decided to use obviously top-notch producers and singers.

While she is operating out of her home in Atherton, Calif., and funding the venture herself (to the tune of several hundred thousand dollars), Roizen found producer George Daly and then well-known Nashville music producer and songwriter David Malloy to aid her in translating her lyrics into songs.

The genre of the songs ranges from hip-hop to rock to country, such as the catchy “Objects in the Mirror,” which could easily be mistaken for a boot-kicking number sung by, say, Reba McEntire (whom Malloy has worked with).

Now, it will be like most start-ups–about getting your product used by consumers. In this case, that would be women struggling to stay fit as they get older, like Roizen herself, which she thinks is a big market.

While the CD costs about $15 on Amazon and can also be downloaded on iTunes, Roizen hopes to branch out with the concept if it catches on.

You can listen to the music or read the lyrics here.

And here’s a video chat with Roizen at her home about “SkinnySongs” and also the VC business:

First, Heidi Roizen–at whose luxe house in Atherton, Calif., the event took place–was also honored. Roizen’s close friend and onetime VC Ann Winblad gave her the award, and Roizen gave a gracious speech about her house, the award and the need for community and connection.

It was good she got an award, too, as I made a joke onstage right before about the diversity of the honorees this year (four middle-aged white guys whose differentiating elements were blazer colors and facial hair) and throughout the awards’ 10-year history. Most of the nearly five dozen SDForum honorees overall have been men, which is no surprise in the tech industry.

But the accomplished women are: Donna Dubinsky and Esther Dyson (1998); Ann Winblad and Kaye Caldwell (1999); Cate Muther (2001); Sandra Kurtzig (2002); JoMei Chang (2003); Carol Bartz and Carly Fiorina (2005).

Second, Mike Moritz wasn’t quite as flat as some reports noted, such as here (and note to Valleywag: I am not kissing up to the uber-VC).

His speech was too short, but he did get a good line off about his more nearsighted qualities as an investor, noting some of his bad choices by saying it took “a lot of vision to fund Webvan, PlanetRx, eToys and RedEnvelope.”

And it was nice that wireless legend Craig McCaw was introduced by his wife, Susan, who is also a big wheel in her own right as U.S. ambassador to Austria. She was diplomatically gracious–as in no really juicy stories–about McCaw, who is unusually sassy compared to a lot of tech figures.

And games exec Trip Hawkins got off two good ones. First, he noted perfectly deadpan that the disaster at his once-hyped 3DO “enhanced my faith in God.”

And he poked fun at former boss Steve Jobs, telling a story about how the computing legend asked him one day: “You’ve never taken LSD before, have you?” Then, without a pause, Jobs added, “No, I didn’t think so…”

Lastly, as the clever Tom Foremski writes about the event in this post on his great blog, Silicon Valley Watcher, that I “looked very rock star, arriving in black shades and jeans, in a rebellious disregard for the smart attire suggested for the event.”

Actually, Tom, if I am what passes for glamorous in Silicon Valley, we are all in trouble. And it was totally unplanned.

I had just come back directly from a trip to Los Angeles, where I stayed out too late at the Joost party there Tuesday, where I learned about some interesting new content initiatives for the online video site from budding entrepreneurs, and then elsewhere (this is L.A. after all–hence the much-needed sunglasses). I also simply forgot to pack my power suit, because I am really absentminded.

Also here is another piece on the event from Dean Takahashi of the San Jose Mercury News.

And here’s one very short video snippet I left out of Walt, Craig and Susan McCaw and former Microsoft resident brain Nathan Myrvold yukking it up, with me not being able to get a word in edgewise (which can, I realize, be seen as a good thing).

The not-for-profit group for-profit gave out its yearly awards to four tech figures, including The Wall Street Journal’s Personal Technology columnist Walt Mossberg, who is also my partner in the D conference and the AllThingsD.com site, and, more important, my close friend. I was there to introduce him.

Other recipients were big tech players including wireless legend Craig McCaw (now running Eagle River Investments and Clearwire); game pioneer Trip Hawkins, now CEO of Digital Chocolate; and supercharged venture capitalist Mike Moritz of Sequoia Capital.

There were cocktails, food and high-level schmoozery, along with the expected speeches and handing out of heavy glass awards. This was no Oscars, of course, given the distinct lack of evening gowns and no red carpet–the closest thing to glamor were discussions about the functionality of the iPod.

Here is my longish video of the event, with some snippets of speeches by Hawkins, McCaw, Moritz and Walt at the end: