Talking Bass Arp (with mod) by Florentino
The LFO rate gets set by sending values over CC1. Set the ASSIGN value for the Neutron to MOD (Mod Wheel) and you can hit the mod wheel on your MIDI controller or send CC values through your sequencer (Or DAW). The recording has the pure sound (sending CC1:0 and CC1:127 every 2 steps).
The recording has 4 bars of the sound by itself, then some beats. It's just one note being pressed and then a transition note for one beat at the end.