Thanh-Tam Le wrote:

>Alfven's Symphony No. 4 (Fran havsbandet) was nicknamed "Sinfonia
>erotica" by some Stockholm critic after it was premiered.  This was not
>meant as a positive comment, but actually it does make sense.

Which immediately reminds one of another, perhaps more obvious avenue to
explore, namely the works of PDQ Bach:

Erotica Variations, S. 36EE. (Windbreaker/Ballons/Slide Whistle/Slide
Windbreaker/Lasso d'Amore/Foghorn/Bell/Kazoo/Gargle[1 Player]; Pn.)

Hansel & Gretel & Ted & Alice, S. 2n-1. (An Opera in 1 Unnatural Act)
(Bargain-Counter Tenor; Hpschd., Beriberitone/Calliope, Pn.)

Pervertimento, S. 66 (Bagpipes, Bicycle, Balloons; Strings)

"Safe" Sextet, S. R33-L45-R[pass it once]78 (Picc., E. Hn., B. Cl.,
Cbn., Cel., Hp.)

Serenude S. 36-24-36 (2 Slide Whistles, 2 Kazoos, Tromboon, Windbreaker,
Shower Hose, Strings)

At which point, I'm not sure I'd call it sex in music...

Bill H.