Daily Telegraph Toughie Friday July 5Th 2013

[catsrcool]

16dn Excited girl leaving energetically for dancing -- a gas! (9) ??e?y???e acetylene? why?
if above is right 16ac starts with a. For friendly relations, it's disaster ignoring circuit of French lake (5) ??u?y
26ac Make music by electronic means? Endlessly tricky (9) t?a?e?a?e the only word I can fit in is tradename???
17dn Possibly sea lavender quietly removed pain (7) l?m?a?? lumbago? why?
if that's right 27 ac starts with o. Person with influence in court plugging 'Ring' production (7) o?t?p?s = octopus? why?

[bibblebub]

16d) yes - remove the letters of 'girl' from 'energetically' and make an anagram

[bibblebub]

26a) AMITY

french for lake is lac, so reverse that and remove from calamity

[mac44]

17d. yes. sea lavender is plumbago, remove the p for quietly.

[bibblebub]

26a) TRADENAME [=make]

music = TRAD [jazz]
electronic = E
means endlessly tricky = anagram of mean(s) = NAME

[kettledrum]

17a (p)lumbago

[catsrcool]

Thanks that just leaves an explanation for 27ac

[kettledrum]

27a. O = ring
Ct = court
Opus = production

[catsrcool]

Thank you kettledrum

[margie04]

And thank you, catsrcool, for asking the question which kettledrum answered - I've been stumped by it all morning.