Under the reign of the last Lydian king Croesus, Lydia reached its greatest expansion. He accidentally killed his brother and exiled himself to Lydia, where King Croesus welcomed him. He was succeeded by his son Croesus. Soon after Solon's departure, tragedy befalls Croesus. Croesus retreated to Sardis the following morning. The story of "Croesus of Lydia" exemplifies this. On Cyrus's defeat of Croesus, Pamphylia passed to the Persian Empire. "Moon on a Rainbow Shawl", "Step Lively Boys", "Croesus", and "The Witch". Later in the same century, the Lydians under Croesus invaded Persia. Croesus of Lydia had formed an alliance with it. It interprets Bacchylides' narration as Croesus attempting suicide and then being saved by Cyrus. The project was funded by Croesus of Lydia, and took 10 years to complete. After defeating Croesus, the Persians adopted gold as the main metal for their coins.