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Robert Randolph hits the high notes while playing his pedal steel guitar during the concert with his family band Saturday, December 21 at Park City Mountain Resort's 50th anniversary celebration festivities. (Photo by: Christopher Reeves/The Park Record)

Robert Randolph has the crowd join in singing while playing his pedal steel guitar during the concert with his family band at the Park City Mountain Resort's 50th anniversary celebration festivities Saturday, December 21 with a live show in the resort's plaza. (Photo by: Christopher Reeves/The Park Record)

Danyel Morgan strums the bass guitar during the Robert Randolph and the Family Band's concert in the Park City Mountain Resort's plaza during the 50th anniversary celebration festivities Saturday, December 21. (Photo by: Christopher Reeves/The Park Record)

Jeremiah Maxey gets invited up onstage from the crowd to show off his slide guitar skills with the Robert Randolph and the Family Band Saturday, December 21 during Park City Mountain Resort's 50th anniversary celebration. (Photo by: Christopher Reeves/The Park Record)

Park City mayor, Dana Williams makes his way onstage to join the band with his blues harmonica during the Robert Randolph and the Family Band concert at the Park City Mountain Resort's 50th anniversary celebration festivities Saturday, December 21. (Photo by: Christopher Reeves/The Park Record)

Park City mayor, Dana Williams makes his way onstage to join the band with his blues harmonica during the Robert Randolph and the Family Band concert at the Park City Mountain Resort's 50th anniversary celebration festivities Saturday, December 21. (Photo by: Christopher Reeves/The Park Record)

Alexandra Coatney (L) and her daughter Claire Coatney dance to the Robert Randolph and the Family Band music among the crowd during the Park City Mountain Resort's 50th anniversary celebration festivities Saturday, December 21 in the resort's plaza. (Photo by: Christopher Reeves/The Park Record)

A spinning Park City Mountain Resort 50th Anniversary logo was cast onto the plaza concrete during the resort's festivities Saturday evening. (Photo by: Christopher Reeves/The Park Record)