The Bassline is a simplified software simulation of a Roland™ TB-303 Bass Line, a monophonic bass synthesizer with a built-in sequencer. Its sound sources include a single tunable oscillator whose waveforms are sampled from an original TB-303 board and an audio input. You can sculpt the raw sound with a resonant filter and a simple envelope generator. You can program the Bassline through internal patterns. Each of its four pattern banks can store up to seven patterns. Each pattern can store up to 99 steps. The step length is fixed to a 16th note but you can slide notes to create longer durations. Notes can also be accented. Patterns are always programmed in step mode, one step at a time. You can play the Bassline through pattern tracks only. The Bassline excels at producing acid style bass loops, especially when you subsequently distort its sound. You can also use it as a simple filter effects unit thanks to its audio input connector.