Hello, I have the Sonar Professional and I do not know if you have any tools that allow me to stretch or shrink an audio, without losing the original tuning.
I should look in the Manual, but my language is Spanish and is not yet available in Spanish. Right now I'm using the Google translator.
Thanks so much for any help. A greeting!

Hi. Shift+Ctrl+Drag does exactly this.
All the best.

It was exactly that! Thanks Zargg !!!
Now I also have the question of whether you can do the same thing by changing the pitch. I have no peace !!
Thank you!

Does Melodyne come with SONAR Pro?
If so, that is what I would use for pitch. Right click on clip, choose Region FX, and choose Melodyne.
(Use as small clips as possible)
https://www.youtube.com/watch?v=pG0JSKD0GRI
It can be used on other things than vocals as well.

Yes, I have Melodyne. Thank you very much for your help Zargg !!!
A cordial greeting!!