After 13 years in retirement, country music legend, Garth Brooks, finally began his long awaited comeback tour last night in Chicago. The first show of his sold-out tour took place in Chicago's Allstate Arena, and saw the performance of a new song, 'Man Against the Machine', before the performance of his 1991 hit single 'Rodeo'. 

Garth Brooks at Croke Park in Dublin, Ireland on Monday 20th January 2014
Garth Brooks retired from recording and touring in 2001. 

According to his pre-show press conference, Brooks joked: "Tonight's show is going to suck. We're all old and slow." This was not the case, however, as he went on to perform songs like 1992's 'Papa Loved Mama', 1995's chart topper 'The Beaches of Cheyenne', 1992's chart topper 'The River', 1990's 'Unanswered Prayers', and his most popular track, 'The Dance' closed the show. 

He was joined during the concert by his wife, Trisha Yearwood, who went on to sing a number of her own songs, both alone, and as duets with Brooks. 

More: Garth Brooks Announces Comeback Tour

In 2001, Brooks went into semi-retirement from touring and recording, so that he could devote as much time as possible to raising his daughters. The youngest, Allie, graduated from high school earlier in the year, leading to the highly anticipated tour finally becoming a possibility. 

More: Eight Years On, Garth Brooks And Trisha Yearwood Are Still Keeping Alive That Instant Connection

One of the members of the sold-out auditorium was none other than Lady Gaga, who posted a picture of herself and her boyfriend at the concert on Instagram. The picture was taken during the performance of 'Friends in Low Places' and came with the accompanying caption "He's singing I Got Friends in Low Places. At the Garth Brooks show with my country boy. So much fun were screamin!"

Garth Brooks is due to return to the Allstate Arena tonight, as well as the 6th, 11th, 12th, 13th, 14th of September. He will then appear at the Phillips Arena in Atlanta, Georgia, on the 19th, 20th, 21st, 26th, 27th of September, before finally finishing with the 10th, 11th, 12th of October in the Veterans Memorial Arena in Jacksonville, Florida.