Dvorák composed his “Slavonic Rhapsodies” op. 45 in 1878, initiating his so-called “Slavonic period”. They were issued by the publisher Simrock the following year as three independent orchestral pieces (in D major, G minor and A-flat major) appearing under the same opus number.
Now the “Slavonic Rhapsodies” are being issued separately in scholarly-critical editions. The editor Robert Simon has taken Dvorák’s authorised first edition as his principal source.