Dear Hans,
The album Stéphane Grappelli / Elek Bacsik (LP, I never saw it on CD) contains live performances (french broadcasts stolen by Italian producers!) of :
- Stéphane Grappelli on one side (4 tracks)
- 3 tracks attributed to Elek Bacsik on the other side, but on Summertime it is Coco Briaval with his two brothers René and Gilbert. Not the same concert, nor sidemen (no piano).
If you want the live recording of Summertime by Briaval I can send you a mp3 (I must do a transfer).
The link to Djangostation was only to show who Briaval was, but Summertime on the LP "Les Briaval" is a different version (studio). I do not have this one in my possession but the webmaster of Djangostation is a friend and I can ask him to send you a mp3 if you want.
Best
Steven