Cartridge Overdrive
NES chiptune meets modern techno: square-wave hooks, a 1/32 arpeggio and coin sounds over a 909 kit and a rolling bass.
- Key
- E minor
- Tempo
- 130 BPM
- Length
- 2:45
- Tracks
- 15
- Loudness
- -14.1 LUFS
- True peak
- -2.0 dBTP
The prompt
/wavelength Create a chiptune styled NES song mixed with modern techno fusion
The track
Cartridge Overdrive starts as a Nintendo game and ends as a techno record. The chip side is built the way the NES sound chip works: two pulse-wave channels, a triangle wave for the bass, a noise channel for drums, and chords played as a very fast arpeggio because the chip could only sound one note per channel. The modern side is a Roland 909 kit, a rumble reverb under the kick and a saturated rolling bass.
The two worlds meet in the power-up section, where the 909 kick enters sounding like a 4-bit sample and a bitcrusher opens it up to a clean, full kick over eight bars. The hook stays on the square-wave lead throughout; in the drop a supersaw doubles it an octave down for weight. The chords repeat every eight bars, E minor, C, D and a B major that gives the tune its boss-battle tension. Coin, power-up, 1-up and game-over jingles mark the sections.
| Time | Section | What happens |
|---|---|---|
| 0:01 | Intro | Pure NES. A square-wave lead plays the hook over a 1/32-note arpeggio, a triangle bass in octaves and a noise drum kit, with coin sounds at the ends of phrases. |
| 0:16 | Power-up | A 909 kick arrives as if played by a 4-bit cartridge, crushed and downsampled, and a bitcrusher opens it to a clean modern kick over eight bars. A riser climbs, the modern bass starts on the offbeats, and a power-up jingle runs into the groove. |
| 0:31 | Groove | Full techno: 909 kick with a rumble reverb, clap and sixteenth hats, a rolling bass ducked under the kick. The second pulse channel plays offbeat chord stabs and the arpeggio pumps behind them. |
| 1:00 | Main | A 1-up jingle, a ride cymbal, and the hook back on the square lead from bar 41 with a dotted-eighth echo. |
| 1:30 | Breakdown | The kick stops. A warm pad holds the chords while the lead plays the hook in half time and the arpeggio's pulse width sweeps. The chip drums come back for the second half. |
| 1:44 | Build | A chip snare roll speeds up from eighths to 32nds and rises in pitch. The arpeggio climbs over a B pedal and gets bitcrushed, a high-pass filter thins the whole mix out, and a last power-up lands on a silent beat. |
| 1:59 | Drop | Impact and sub drop, then the hook on the square lead doubled an octave down by a 96-oscillator supersaw, over the whole techno rig. |
| 2:29 | Outro | The techno falls away and the NES sounds finish alone: the hook, the triangle bass and the noise kit, ending on a descending game-over run. |
How an agent sees it
render --png draws it: sections and bars, the loudness contour, a spectrogram of the mix, and every track's notes over its level.Instruments and patches
The NES rig (Relica 2, VST3)
Relica 2 has no preset parameter, so each sound is a state file written from a factory preset with parameter overrides.
| Track | Patch | Role |
|---|---|---|
| Lead | Electric Square, mono with a short glide and light vibrato | Pulse channel 1: the hook |
| Harm | 25% pulse, short decay | Pulse channel 2: offbeat chord stabs in the techno sections |
| Arp | 40% pulse through the built-in arpeggiator at 1/32 | The chords as a fast arpeggio; its pulse width sweeps in the breakdown |
| Tri | Triangle, mono | Octave bass in the chip sections |
| ChipKick, ChipSnare, ChipHat | Triangle and noise | The noise-channel drum kit and the build's rising snare roll |
| SFX | Square | Coin, power-up, 1-up and game-over jingles |
The techno rig
| Track | Source | Role |
|---|---|---|
| Kick | Legend 909 kit (built-in sampler) | Four on the floor; bitcrushed at 4 bits in the power-up, opening to clean |
| Clap, Hats | Legend 909 kit (built-in sampler) | Clap on 2 and 4, sixteenth hats, ride and crashes |
| Bass | Surge XT: Bass 7 | Rolling sixteenth bass, saturated, low-passed and ducked under the kick |
| Saw | Surge XT: 96 Osc Supersaw | The hook an octave down in the drop |
| Pad | Surge XT: Warm Theme | Held chords in the breakdown |
| FX | Built-in FX | Risers, impacts, reverse swell, sub drop |
Mix and master
- Faders set from each track's measured loudness, then master rides per section so the breakdown sits about 6 dB under the drop.
- Sidechain ducking from the kick: bass 9 dB, arp 5, pad and pulse stabs 4, lead 2.
- A rumble bus: the kick through a dark reverb, saturated and ducked so it only fills the gaps.
- The beat before the drop cuts to near silence (-51 LUFS) while a master high-pass sweeps up to 650 Hz.
- Master: a gentle glue compressor (1.7:1) and a true-peak limiter at -2 dB.
- One second of silence before the song.
Download the song
The whole song in one file: the job Wavelength renders, the script that wrote it, its notes, every revision and the review comments, in the open song format. Render it, change it, or ask your agent to make it its own:
wavelength render cartridge-overdrive.wavelength
wavelength unpack cartridge-overdrive.wavelengthTracks whose plugins you don't have play built-in stand-ins, so it renders on any computer; with the same plugins it sounds as you hear it here.
Download cartridge-overdrive.wavelength 7.1 MB · Licensed Creative Commons Attribution 4.0: share and remix it, credit the song.