Repertoire for junior year university

[mek42]

I want to write a duet for flute and trombone. The flutist is at the beginning of her junior year as a flute performance major. Could I have some suggestions for repertoire on IMSLP I could read to make sure I write a flute part that isn't too easy, nor ridiculously difficult, but, rather, is just right?

Thank you!

[pied_piper]

Here is a link to a standard flute repertoire list.
http://www.leonardgarrison.com/appliedrep.html

Many of these can be found on IMSLP.
Look at the NFA grading. They are ranked from G to K with G being easier and K more difficult.
If you look at works at the G-I level rating, that would be appropriate for a junior.
J & K are the most difficult levels with K reaching virtuoso level.

These are standard flute repertoire and are often used as college audition pieces.
http://imslp.org/wiki/Fantaisie_Pastora ... er,_Franz)
http://imslp.org/wiki/La_fl%C3%BBte_de_ ... et,_Jules)
http://imslp.org/wiki/Concertino_pour_F ... C3%A9cile)

These are probably better suited for senior recital.
http://imslp.org/wiki/Flute_Concerto_in ... g_Amadeus)
http://imslp.org/wiki/Flute_Concerto_in ... g_Amadeus)
http://imslp.org/wiki/Trio_for_Piano_an ... Friedrich)