Hi @danishali903 I appreciate your comments and will reply to a few in case anyone’s interested I don’t usually write expression slurs (legato) on the strings, except for very short groups of notes. Instead, if I want to do this, I specify ‘legato’ (as an articulation, which the software I use does recognise) and hide the text. Bear in mind that this is an exercise and that the economy of instrumentalists/instruments has not been the priority, although it was not intended to be used indiscriminately either. That is why there is a piccolo alongside the flute and the alto flute, because that line in bar 18 requires three instruments from the same family. The same applies to the four horns and the tuba. Another of the ideas is that, as far as possible, the families should sound harmonically complete, as in the chord in bar 9. As for the harmonics, they have all been checked and are feasible, though I may have made a mistake. I’ve had another look at the ones you mention and they’re fine. In this regard, I recommend this webpage, which lists all the natural and artificial harmonics that can be played (and those that are best avoided). https://conductit.eu/study-room/rehearsal/rehearsal-4/4-6-string-harmonics/ When it comes to orchestration, there are endless possibilities. Probably, by assigning a few lines to other instruments, I could have done without the piccolo or one of the two horns… But then again, let’s be realistic: when Debussy orchestrated, he didn’t care about the number of instruments – it was all in the service of colour. Best. Addendum The issue of legato slurs in the strings is something I’m going to consider writing about (always bearing in mind what they might do, as I understand it). It’s a more specific point. In fact, as I have a few final amendments to make to this orchestration, I’m going to include that point. Thank you. I’m still at 5% in my orchestration skills.