In what year was the album “Prince Neptune: Singles & Rarities” released by Cody Simpson?

In what year was the album “Prince Neptune: Singles & Rarities” released by Cody Simpson?: The album “Prince Neptune: Singles & Rarities” was released in 2021 by Cody Simpson, featuring 4 tracks.
What is the most successful song from the album “Prince Neptune: Singles & Rarities” by Cody Simpson?: “Castle walls” is the biggest hit from the album “Prince Neptune: Singles & Rarities” by Cody Simpson.

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