Richard Todd responds to me responding to him:

>>>Hugo Alfven's Symphony no. 3 is sometimes referred to as the Erotica,
>>>though it would hardly penetrate today's porn market.
>>
>>I suspect Richard means Alfven's 4th which generates enough steam to
>>require adjustment to the air conditioning, or at least the need to
>>open a window.  The rather zany 3rd doesn't have the same effect.
>
>Perhaps.  Which one is called "from the Seaward Skerries" and has a
>male vocalese in one movement and a female one in the next?

This is the 4th and both voices also combine, much as they do in Nielsen's
3rd.  It's the only one of Alfven's five symphonies that employs voices.

Richard Pennycuick