vEddY wrote:I agree with you on all acounts. However, I do have one thing to add. I have a (mis)fortune of having the "perfect pitch" thingy. It would be nearly impossible for me to describe how complicated it is for me to do songs from different keys then original key.
I have a similar kind of problem, though the opposite way!
I have some amount of perfect pitch. Its not flawless, but my ears certainly know something is wrong when I hit a C major chord on the piano and it comes out sounding like a Bb, and it is bothersome.
So unlike you, it doesn't bother me to hear a song in a different key... I recognize it sounds different, and sometimes I feel it doesn't work as well, but it never really bothers me... after all, even recorded covers of songs are often done in different keys from the original. But I do get bothered by the disconnect between the note I'm striking and the transposed note I'm hearing.
I very, very rarely use the transpose feature, but there are a few times it's come in handy.
I'll also point out another time a button is preferable to playing a song in a different key... sometimes there are signature parts that depend on a certain key layout. For example, think about a blues run where you hit a black key, say, Bb, and drop the same finger to the white key, B. If you transpose it a half step down, you now need to slide the note from A to A#. It will not feel or play the same having to hit the notes with two fingers, plus you'll have fewer fingers "left over." You might come up with a fingering that will let you get the notes you want, but you won't recapture the feel of playing it in the original key. This will also affect any improv you might do in a lead section... improv in a different key, because of the physical layout of the notes, will tend to bring you to different places which is going to alter the character of the lead, and in some cases, perhaps in an undesirable way. I think this would especially come up in organ playing, where there are numerous common maneuvers that are not simply using a finger to press a key, and the key layout definitely affects what you reasonably can and cannot do.
And one last one no one has mentioned... sometimes you could need a transpose button just to keep a part within the keyboard's range. Say you're playing a song in C on a 61-note board, and someone asks you to raise it to D, and you need to go to that high C when you play it in C ... now there's no high D to go to, so what do you do? This also effects people with larger boards who set up splits. Even if you have the ability to transpose on the fly, you have to worry about a part going out of its defined zone range on the board.