"What is your definition of songbook here?"
This question is considerably more difficult to answer than it first appears - after pondering this for a while, I'm still not quite sure. The term seems to mostly be used in reference to the body of songs composed by a widely acknowledged fine songwriter. Anyone who's ever written, say, two songs, technically has a 'songbook', I suppose, but the word obviously connotes more than just that - which is where the slipperiness enters. There are many factors that apparently feed into it - subjective judgments of 'quality' and creativity, breadth and range of output, popularity of the oeuvre, perceived relevance and influence within a genre, etc. But perhaps the best definition I can come up with - and I realize that this is wobbly at best - is, "how likely are this person's songs to be banged out for fun on a beat-up 6-string in someone's basement, or performed by another artist for an audience?". In other words, to what extent do this artist's songs transcend their own career? Look to Dylan, for instance, as perhaps the ultimate example of such. The question, I think, has little to do with the raw musical talent of the artist in question. Take Zappa, for example - many consider him a hyper-musical-genius, as do I, but I think it would be odd to hear his body of work referred to as a 'songbook'. Why? I think largely because coming across a cover of a Zappa 'song', to the extent to which that even exists to begin with (he's more of a 'composer'), is not all that probable. His work is mostly self-contained within his own idiosyncratic world, as brilliant as it may be. To me, the Rheos are closer to the Zappa example than to the Dylan one. It seems far more likely that you'll hear someone performing or recording, like, a Sexsmith song than a Rheos song - hence, 'Sexsmith songbook', and Rheos... well, not.
That's surely full of holes, but I think it's the best I can do.
" I think the problem is that the quotes are in the incorrect place - it should be The Great "Canadian" Band. "
I mostly agree, but I don't think it's me who's put the quotation marks around the 'wrong' word, but the author of the article, by implication.
"I would agree that the hip are "The" Great Canadian Band but if the members grew up in Phoenix, they would still be a great rock band that would sound an awful lot like the hip. ... If the members of the Rheostatics grew up in Phoenix, I don't think that they could have become anything even remotely resembling the Rheostatics."
I understand what you mean, and that could be true, but it's ultimately unknowable. It's the age-old nature/nurture argument, which no one has ever sussed. To what extent are the Hip a cultural product of Kingston? I don't know - maybe very little, but maybe not. To what extent is Dylan the result of "that little Minnesota town", or The Beatles the result of Liverpool? Hard to say.
Beyond just questions of popularity and recognition, I think another 'problem' that I have with the Rheos in this 'great Canadian' context thing, is that they wear their influences SO prominently, that in an odd way they almost don't (can't?) stand solely as their own entity. That is, the whole existence of the band can sort of be seen as one big po-mo referent to Canadian music and culture rather than being a truly significant contributor to such in its own right. They're almost more like the country's house band than its Bob Marley. In the grand scheme, I don't think they really have any lasting 'relevance', despite being quite uber-Canadian. They're kinda like a (premature?) coda, rather than a new verse in the ongoing unfolding of Canadian music.
Know what I mean?