what happened in Alkan's Op.25?

[Windshy]

Alkan's

Alleluia is Op.25

but Fantaisie Sur Don Juan Paraphrase is Op.25 too

what is this? is like Op.25A and Op.25B?

I'm confused little bit.

[jossuk]

It seems that the two pieces were published the same year (1844), the Alleluia as Op. 25, the Fantaisie without opus number.

[Melodia]

It's not uncommon, especially in that particular era. Happened a lot with Dvorak (I think Op. 14 has three sperate independant pieces), Gottschalk, and others. Also, sometimes a piece will actually have more than one Op. number.

That's why I love other cataloging systems, that use the complete works after the fact.