Symphony No. 1 and Piano Concerto No. 1 are orchestral works by Sergei Rachmaninoff, completed in 1897 and 1891 respectively. Both early works exhibit late-Romantic harmonic language, expansive orchestration and a focus on broad melodic lines, with the concerto emphasising virtuosic piano writing and the symphony representing an early large-scale orchestral statement that helped shape his subsequent compositional trajectory.