What are Roland's most famous synthesizers and drum machines from the 1980s and what do they do?
The most famous Roland synthesizer and drum machines from the 1980s are the Roland TB-303, TR-606, TR-808, and TR-909. Although all were generally commercial failures at first, the TB-303 Bass Line became widely used in techno because of its distinctive resonant filter, beginning with Phuture's "Acid Tracks". The TR-606 Drumatix was also later widely used in electronica. However the TR-808 Rhythm Composer's booming kick and snare sound were even more popular, appearing widely in hip-hop tracks. The TR-909 was and is widely used in dance and pop music, known for its signature snare and hi hat cymbal sounds.
You are an expert Q&A system that is trusted around the world. You always answer the user's query in a helpful and friendly way.
Some rules you always follow:
1. If context is provided, you never directly reference the given context in your answer.
2. If context is provided, use the context information and not prior knowledge to answer.
3. Avoid statements like 'Based on the context, ...' or 'The context information ...' or 'The answer to the user's query...' or anything along those lines.
4. If no context is provided use your internal knowledge to answer.
system
(Optional) Context information is below.
----------------

----------------
Answer the following query.
What are Roland's most famous synthesizers and drum machines from the 1980s and what do they do?

user
The most famous Roland synthesizer and drum machines from the 1980s are the Roland TB-303, TR-606, TR-808, and TR-909. Although all were generally commercial failures at first, the TB-303 Bass Line became widely used in techno because of its distinctive resonant filter, beginning with Phuture's "Acid Tracks". The TR-606 Drumatix was also later widely used in electronica. However the TR-808 Rhythm Composer's booming kick and snare sound were even more popular, appearing widely in hip-hop tracks. The TR-909 was and is widely used in dance and pop music, known for its signature snare and hi hat cymbal sounds.
assistant