Composition: Impromptu No. 1, Op. 19 (Wieniawski, Józef)
| Title | Impromptu No. 1 |
| Alternative title | Impromptu pour piano Op. 19 par Jos. Wieniawski |
| Creators | Józef Wieniawski (composer) |
| Opus | Op.19 |
| Instrumentation | piano |
| Number of movements | — |
| Keys | B major |
| Composed | — |
| First published | 1860 |
| Dedication | À M[ada]me Henriette Rosen |
| Tempo markings | — |
| Metronome markings | — |
| Time signatures | — |
| Average duration (sec) | — |
| Number of measures | — |
| Composition types | Impromptus |
| Period | Romantic |
| View on IMSLP |  |
| Code |  |
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