||Suite No.2 for Piano 4-Hands
||Suite No. 2 (Cm.) f. Pfte zu 4 Hdn.
||Wilm, Nicolai von
- Sostenuto e cantabile
||1881 – Leipzig: F.E.C. Leuckart
||Piano 4 hands
Actually, alternative title acc. to HMB 1881 page 222, is "Suite No. 2 (Cm.) f. Pfte zu 4 Hdn. (Toccata. Serenata. Gavotte. Canon. Sostenuto e cantabile. Finale.)" but fully titled like that one might have to tag Suites; toccatas ; serenatas ; gavottes ; canons; cantabiles ; finales and I'm not sure about that...
A Suite No.1 for Piano 2-Hands followed as Op.155 later (Suite No.1, Op.155 (published 1898). One assumes a Suite No.1 for piano 4-hands preceded this one as this was published as suite no.2 in 1881. To avoid confusion, the two series of suites should be distinguished at least in this title.
Answer: Suite No.1 for Piano 4-Hands is Op.25, 1879, published by Rahter. (There is also a Suite No.4 for Piano 4-Hands, Op.53, 1886, published by Aibl.)