All good points, Mo.

But, especially in light of the fact that this forum is mostly populated by players interested in those older (older than hiphop, anyway!) styles of music, that DO need a certain degree of fluency in any key (to play the bridge, if not the whole piece), unfortunately the transpose button is still not the answer.

The list of standards (not just jazz, but rock, pop and alternative) that have bridges, transitional sections and whole verses in keys other than what you start in is HUGE. You aren't suggesting that the transpose button be adjusted DURING the song, are you? That would be confusing, at best (and a train-wreck at worst!)....

If your goal is to play any tune that you want to, rather than ONLY any tune that doesn't have an out-of-key section, there doesn't seem to be any way around the necessity of coming to grips with different keys than you already know..

Technology has 'advanced' to the point that you don't have to play anything at all to be considered a musician (or so most hiphop DJs would have you believe!), but unless being one of these is a goal of yours, just keep up the study...

As I said, '12 months, 12 keys.... Coincidence? I think NOT!'