2 in B-flat major, Op.

15, was composed by Johan Svendsen in 1874.

The symphony has been characterized by Svendsen's biographers – Finn Benestaf and Dag Schjelderup-Ebbe – as Svendsen's "most mature and distinguished work".

[1] There are four movements: The symphony was premiered in Oslo on 14 October 1876.

The music was well received, and the third movement repeated for an enthusiastic audience.