Harrison Mcclary / REUTERS

Glen Campbell at the 2012 Country Music Association Music Festival.

Country singer Glen Campbell is canceling his upcoming tour with Kenny Rogers through Australia and New Zealand due to health reasons, the Associated Press reports.

A spokeswoman said Campbell – who was diagnosed with Alzheimer's disease last year -- isn't up for "the very long flight that it would require."

Glen Campbell says goodbye in style at Grammys

Campbell has been on a Goodbye Tour, and the trip Down Under would have been his last international stop. The singer, however, is still scheduled for performances in the U.S. throughout the summer and into the fall.

Rogers will still make the tour through Australia and New Zealand, receiving help from Aussie country artists. The trek starts August 10 in Christchurch, New Zealand.

The Band Perry on being part of history with Glen Campbell

At the end of June, the "Rhinestone Cowboy" singer took the stage at the Hollywood Bowl for his last concert in his long-time home of Los Angeles, with tributes from artists including Jackson Browne and Kris Kristofferson. You can also watch this poignant clip for "A Better Place," in which Campbell revisits his life and career with Josh Homme.

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Glen Campbell performing "Rhinestone Cowboy" at the Grammys.

They may have not even been alive when Glen Campbell's "Rhinestone Cowboy" was a huge hit in 1975, but the two women seen sitting down and texting while most of the Grammy audience gave the singer a standing ovation for the song did not get a free pass from viewers.

Campbell, who revealed in June that he has Alzheimer's disease, delighted many with a lively performance of the hit. While most of the audience stood and sang along, CBS cameras clearly showed two women sitting down and typing on electronic devices while the audience applauded Campbell's number.

Actress Kristen Chenoweth tweeted, "Tweeting from audience rather than standing and applauding a living legend like Glen Campbell is simply rude."

Comedian Todd Barry agreed, tweeting "Awful women who were texting during Glen Campbell's ovation should publicly apologize." 

Campbell was joined onstage by Blake Shelton and The Band Perry. Also winning lifetime achievement awards were George Jones, "The Girl from Ipanema" composer Antonio Carlos Jobim, Memphis Horns, Gil Scott-Heron and the Allman Brothers Band.

What did you think of Glen Campbell's performance of "Rhinestone Cowboy"? Should the texting women have paid attention? Tell us on Facebook.

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