You HAVE to go to Salzburg (Austria). It was my favorite city when I visited Europe. Visit Mozart's house, catch a concert in the fortress, visit the hellbrunn haus (or however you spell it) with the water gardens, and so on. There's lots of good stuff there. I didn't find Luxembourg to be all that exciting. If you go to Paris, go ahead and go to Versailles. That was worth visiting too.
Oh yes i totally agree! Salzburg is fantastic - and Vienna! I went there when we did a tour with my local Youth Orchestra, Mozart's house was nice and especially the gardens - i felt like i was in "The Sound of Music"!
sight seeing mainly. never been to europe, so a starter itinerary would be fine. geneo hunt, heh...prolly i'll pass this time.
hmmm, musical events might be a good idea, but i think i can survive without too much of it ( specially right after a week of music, music, and music )
ok...hmmm...venice, .....amsterdam perhaps?
hmmmm
Ohhh come to the Proms in London!! (That's if you decide to come to the UK as i have already mentioned). The Proms is such a fantastic music festival:
https://www.bbc.co.uk/proms/I went last summer and you can literally queue up on the day about half an hour/hour before the concert starts (depending on who plays - obviously when the Berlin Philharmonic played with Simon Rattle there were huge queues for hours that day!) and pay only £4 (for a standing ticket) and see the most amazing world class orchestras/conductors/soloists for such a cheap price! And the atmosphere and location are fantastic - the Albert Hall is a must see plus you're right by the Royal College of Music which is worth a look.
Here is a pic of a Proms concert:

So far on this summer's Proms concerts there has been:
15th July
19.00 - 21.30
Prom 1
Berlioz
Overture - Le Corsaire
Mendelssohn
Violin Concerto
Elgar
Overture - Cockaigne
Tippett
A Child of Our Time
Janine Jansen
Indra Thomas
Christine Rice
Ian Bostridge
Sir Willard White
BBC Symphony Chorus
BBC Symphony Orchestra
Conducted by Sir Roger Norrington
*That was a good concert but my favourite 2 so far have to have been:
28th July
19.30 - 21.45
Prom 18
John Adams
The Chairman Dances
John Corigliano
Red Violin Concerto
(UK premiere)
Prokofiev
Romeo and Juliet (excerpts)
Joshua Bell
Bournemouth Symphony Orchestra
Marin Alsop conductor
*AND
29th July
19.30 - 21.45
Prom 19
Tchaikovsky
The Snow Maiden - introduction; Melodrama; Dance of the Tumblers
Shostakovich
Violin Concerto No.1
Prokofiev
Symphony No.5
Sergey Khachatryan
BBC Philharmonic
Vassily Sinaisky conductor
:-*Mmmm Josh and Sergey were lush

and amazing violinists of course! I especially enjoyed the Corigiliano and Adams works.
------------> As far as piano music is concerned the following are takin place:
Mon 8th Aug - Prom 34
Tippett Piano Concerto - Steven Osborne
BBC Scottish Symphony Orchestra/Martyn Brabbins (a lovely conductor - observed a really interesting conducting masterclass with him recently)
Thurs 11th Aug - Prom 37
Beethoven Piano Concerto no 4 - Gianluca Cascioli
BBC Symphony Orchestra/Ingo Meitzmacher
Fri 12th Aug - Prom 38
Grieg Piano Concerto in A Minor - Lars Vogt
Danish National Radio Symphony Orchestra/Thoam Dausgaarg
Mon 15th Aug - N.B 13.00 - 14.00 - Here's a piano (only) lunchtime recital i.e non orchestral
PCM 5
Brahms
Intermezzo in E flat major, Op. 117 No.1
Tatjana Komarova
Tänze mit verbundenen Augen
UK premiere
Schubert
Piano Sonata in B flat major, D960
Lars Vogt - Piano
Tue 16th - Prom 43
Marc-Andre Dalbavie Piano Concerto (BBC co-commission; world premiere) - Leif Ove Andsnes
BBC Symphony Orchestra/Jukka-Pekka Saraste
Sun 21st - Prom 50
Schumann Piano Concerto in A Minor - Lyr Williams
BBC Symphony Orchestra/Jiri Belohlavek
Mon 22nd Aug - N.B 1300-1400 (a coice/piano lunchtime recital)
Tippett Piano Sonata no 3 - Paul Crossley
Mon 22nd - Prom 51 (c. 7.30pm??)
Ravel Piano Concerto in G Major - Helene Grimaud
London Symphony Orchestra/Bernard Haitink
Mon 29th - Prom 59
Beethoven Piano Concerto no 3- Emanuel Ax
Tonhalle Orchestra Zurich/David Zinman
Mon 5th Sept - Prom 68
Rawsthorne Piano Concerto no.2 - Howard Shelley
BBC National Orchestra of Wales (one of my favourites

)/Rumon Gambe