OK, I promised (in this post) to report the results of my immersion in all-female music, so here goes:
With only female singing voices assailing me, what my ear considered normal quickly adjusted, until a high and sweet voice seemed simply optimal to cut through a musical background: why would low-voice growlers like myself even bother? Likewise as a male, I don't generally perceive other males as "singing to me," rather I identify with them, and with female singers, the situation was to some extent reversed, which for me is nice, though strange; not a role I'm used to.
Beyond that initial impression, re. the "female personality" expressed through the lyrics/persona: I didn't get a lot of this, as I was listening widely, not deeply into any one artist, but subsequent to the 3 weeks running out I did make my way more thoroughly through Joni Mitchell and to a lesser extent Alanis Morissette and Kate Bush (which was more of a refresher; I ODed on her back in the day... she was f'ed up and experimental enough to meet my criteria).
One of the philosophy-related tropes with special appeal to me is the excessively self-reflective, diarrhea-of-the-mouth thing, as exemplified in my inspirational speech, not to mention my book. When one of our readers reposted the former on his blog, the first comment that he got was that it was obviously written by someone who'd had a sex change, i.e. it reeked of the feminine. And here I thought I was doing a rough Woody Allen impression, when Carrie Bradshaw is equally apt, I guess. Yes, I do know some women who are incapable of just straightfowardly stating what they want to say and have to go on a second-guessing, phenomenological rant covering every contingency. While I may do this in writing, as a speaker in my daily life, I'm much more the smile-and-nod get-to-the-point kind of guy, all efficient and sardonic. In the aforementioned lady singers, I got a heavy taste of this female stereotype, with Alanis producing songs to the effect of "Fifteen Reasons for You to Stop Being Passive Aggressive Towards Me." Joni, similar to Bob Dylan, speaks in her own 70s-inflected dialect, replete with references to a life I don't really get. Her early stuff, at least, is very sweet, both due to the quality of her voice and her note choices. Suzanne Vega (who was the avatar of a college ex-girlfriend who listened exclusively to female-penned music) exhibits a similar female persona, minus the nice voice and much of Joni's musical adventurousness. Kate Bush is certainly not shy about including the explicitly romantic (puppies and rainbows) imagery that tends to make men feel icky, but displays a similar level of self-reflection.
Of course, this is just one type, one piece of the female psyche, which, as the reference to my own writing is supposed to suggest, is, I think, something more generically human, except maybe we men (even mostly non-athletic, macho-averse men like myself) have a veneer up blocking that for most of our social lives, meaning we have trouble getting in touch with our feelings and communicating and being truly intimate and all that shite. Taylor Swift (who I've listened repeatedly and intently to in the car due to my 8-year-old daughter's demands) displays a much more subdued version of that spirit, more toned down for radio consumption (though I still think she's an honest-to-goodness songwriter unlike just about anyone else in that genre I've been subjected to).
Still, this self-reflective to the point of neurosis streak seems a common thread for smart women in music, unless overshadowed by some sort of affectation (a la Blondie; Kate Bush and Joni project this despite their affectations), whereas a lot of the smart males whose music I like tend to be more oblique (and this holds regardless of sexual orientation: Michael Stipe and Bob Mould are as oblique as the rest of them).
The other bit of this experience that's stuck with me past the 3-week-window is just the joy of the piercing female voice, and I've been taking in vast quantities of this via a band that that is not exclusively female and not even expressive in the ordinary sense, in that they perform rocked-up versions of traditional English folk songs. Like philosophy, they are very unmanly and uncool to be caught carrying around... in much the manner of barbershop quartet or Christmas music or fantasy novels or many another geek eccentricity. Behold, Steeleye Span:
Watch on YouTube
And here's a much more recent song.