Conversation so far:
When did the Smashing Pumpkins break into mainstream?
Despite problems in its recording, The Smashing Pumpkins' Siamese Dream debuted at number ten on the Billboard 200 chart, and sold over four million copies in the U.S. alone.
How did the Smashing Pumpkins record their album Siamese Dream?
In all, The Smashing Pumpkins' Siamese Dream took over four months to complete the record, with the budget exceeding $250,000.

Question: What impact did this have?
Self-contained rewrite: What impact did Siamese Dream have on the Smashing Pumpkins?