Trill in Sonata in C Major

[cmr924]

I am a bit confused as to how to play these trills in Sonata in C Major by Scarlatti.

Here is the line where the trill is called for.  You will notice it has an "a" next to it.  There is also a "b" version:


Here is where the specific trills are described:


How exactly am I to play this?  For the A, do I play that and then the two eighth notes that can be seen at the end of the measure?  Also, how do I coordinate the notes of the trill to the notes being played by the left hand?

Any and all help will be appreciated.  The more detailed the better.   

Thanks,
cmr924

[desordre]

 Dear CMR:
 In the first measure, you must play the "a" version. The "b" is not for here.
 Notice the following: in the original, you have a C with the trill above, then B-C (as little notes) then a D in the next bar. Are you with me? Near always in baroque practice, the trill starts in the upper note, so if you have this C trill, it shall start in the note D actually. As fas as you have the little notes, they must be included in the ornament.
 Thus, if you get this all, the result is exactly "a". To play it, just replace the original with that. Considering that you asked for a detailed explanation, it will sound like this:
 RH: D C D C B C (bar) D
 LH: C    E    G    (bar) B

 Could you understand? Best wishes!

[cmr924]

Thank you very much for your reply!

I have a question.  Since that measure is a C, is it C then the trill, or is the C just taken away?

You said:
"RH: D C D C B C (bar) D
LH: C    E    G    (bar) B"

What happens to the original C, the one that is marked with the a signifying that trill, in the RH?

Thanks!

[quantum]

The "C" is what would be called the "main note" of the trill.  The "D" would be the upper or "auxiliary note"

Trills are usually indicated by writing the main note (in this case C) with the TR sign above. 

The actualization of the trill is to alternate between the main and auxiliary notes. 

The written "original C" would serve to indicate the total duration of the trill. 

[jolly01]

Thank you all for the question and great answers.  That's something I've been struggling with and hearing it explained like this really made it click.

Brian

[klick]

I find that metronomic practice hands separate, at equal tempos, will encourage my hands to develop finger memorization to its own rhythmn. Then when you add the two hands together, it usually comes out fairly nicely.

I am not sure how well this works, as most of the pieces I play have a steady hand and a melody hand, with little variation, or I do the forbidden practice of copying a recording's rhythm.

Hope it can help,
Klick

[cmr924]

Hello, again!

Thanks for everyone's help.  I have mastered the first trill.

If you will notice, after the trill marked with an "a", there is another trill in the following measure.  Is this played like your standard trill, or like the "a" version?  I tried the "a" version, but it did not seem to work as that trill has it going up a note.

Can someone help me out?  Do I play all the trills like the "a" version until the "b" marking comes up?  Or do I play all the trills like a normal trill, until it tells me specifically?

Finally, does anyone know where I can find an mp3 file of this song?  I would like to hear how I am progressing.

Thanks!