In a brief statement from the Kremlin, Putin said, "I will be most delighted to perform for my comrade."
The choice of Putin raised eyebrows in Washington, since the Russian, while famous for invading neighboring countries and imprisoning political opponents, is not particularly well known as a singer.
The Trump adviser Kellyanne Conway pushed back against such criticism during an appearance on CNN. "If we limited ourselves to people who had talent and experience, that would disqualify half of our Cabinet," she said.