According to a post by the team, development on Symphony's core infrastructure began approximately three years prior to October 2025.

The project, then named Cadence Protocol, launched its testnet on the Canto Testnet.

Cadence Protocol conducted its TGE for the $CAD token through a Liquidity Bootstrapping Pool (LBP).

The team unveiled 'Phase 1' of its launch plan, marking the first major announcement under the new brand name, Symphony.

Symphony announced a strategic partnership with Pendle Finance to develop 'agentic yield strategies,' allowing agents to compose and execute complex yield strategies on Pendle markets.