# Free Online Trombone — Play Low Brass Notes | Resonant > Play a free virtual trombone with sustained brass samples. Explore low notes from C2 to E3 using a computer keyboard, mouse, or touch screen. Canonical page: https://resonant-appsoverflow.web.app/instruments/trombone/ Creator: AppsOverFlow Guide updated: 2026-10-12 Build from the brass below. Explore ten diatonic notes from C2 to E3 for low melodic lines, steady accents, and sustained harmonies alongside the studio’s brighter voices. ## How to play In 3D view, choose Play to tap, strum, or glide across a playing surface. Hold keys or wind surfaces to sustain a note. Choose Rotate to inspect the model; scroll or pinch to zoom. Use the labeled note controls or computer keys for chords and the full range. Classic view provides the original illustrated playing surface. Use a labeled note control or keyboard shortcut to choose a pitch. Tap for a short accent or hold for a longer tone. The illustrated slide responds visually; use the note controls to play. ## Sound Trombone samples from FluidR3 GM provide the low brass voice. Pitches are discrete notes: moving the illustration does not produce a continuous slide, glissando, or a physical trombone position. ## Cross an octave with discrete brass notes Move from a low C through G to the C above. This exercise makes the available register audible without implying a continuous slide. Starting tempo: 60 BPM. Use Keep the beat for a steady pulse. 1: C2 (A) | 2: G2 (G) | 3: C3 (K) | 4: G2 (G) | 5: C2 (A) | 6: Keep holding C2 | 7: Release and rest | 8: Rest 1. **Find the low and high C.** Locate C2, G2 and C3. Their shortcuts are A, G and K. Headphones or speakers may reveal the low C more clearly than a phone speaker. 2. **Make the octave trip.** At 60 BPM, play A-G-K-G on four beats. Release between the notes; the illustration does not bend one pitch continuously into another. 3. **Hold the return.** Play A on beat 5 and hold through beat 6. Release for the last two beats before repeating. **What to listen for:** The two C notes share a name but differ by an octave. The return to the held low C should feel clearly separated from the next repetition. **Try next:** Replace G2 with E2 using D in both places. Compare the smaller intermediate step while keeping the octave endpoints. ## How do I record the trombone in Resonant? 1. **Choose your playing controls.** Choose Play in 3D view or switch to Classic. Tap a playing surface, use the labeled note controls, or press a computer-key shortcut to enable sound. 2. **Record your idea.** Press Record above the instrument, then play your phrase. This records studio audio without using your microphone. Each take can last up to five minutes. 3. **Listen and keep a copy.** Press Stop, open Recordings, and listen to the take. Choose Download WAV or Original audio to keep a file. Saved takes stay on this device; clearing browser storage removes them. ## Questions and answers ### How do I play the online trombone? In 3D view, choose Play to tap, strum, or glide across a playing surface. Hold keys or wind surfaces to sustain a note. Choose Rotate to inspect the model; scroll or pinch to zoom. Use the labeled note controls or computer keys for chords and the full range. Classic view provides the original illustrated playing surface. Use a labeled note control or keyboard shortcut to choose a pitch. Tap for a short accent or hold for a longer tone. The illustrated slide responds visually; use the note controls to play. ### What sounds does the virtual trombone use? Trombone samples from FluidR3 GM provide the low brass voice. Pitches are discrete notes: moving the illustration does not produce a continuous slide, glissando, or a physical trombone position. ### Can I make a continuous trombone slide? This virtual trombone plays discrete sampled notes. The illustration provides visual feedback, but it does not bend a pitch continuously or teach the seven acoustic slide positions. ### How do I hear the low trombone notes clearly? The note controls cover C2 to E3. Headphones or speakers can make that low register easier to hear than a small phone speaker. 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