Step 1 : Introduction to the question "Which music group has won the most Grammy Awards?"
U2 is one of the best-selling bands in the world, having sold an estimated 170 million records worldwide. With 22 Grammy Awards to their name, U2 holds the record for most Grammys won by a group. They are followed by Alison Krauss and Union Station with 14 awards, and the Dixie Chicks with 13 awards. U2 took home their first pair of wins in 1988 at the 30th annual Grammy Awards, with Album of the Year and Best Rock Performance by a Duo or Group for “Joshua Tree”. They won Album of the Year again in 2005 for “How to Dismantle an Atomic Bomb”, making them the only group to win this category twice.