Singer-songwriter Melissa Etheridge has described President Barack Obama's gay marriage endorsement as a “big tipping point.”

The openly gay, 51-year-old Etheridge appeared Friday on CNN's Piers Morgan Tonight to pitch her fourteenth studio album 4th Street Feeling, which will be released on September 4.

“I do think that was a big tipping point in the movement toward equality and recognition of diversity,” Etheridge told host Piers Morgan. “That it is very important to say, 'Oh well, my president said he's for it.' Actually having [marriage equality] enacted at a federal level, that's a ways off.”

She added that anti-gay sentiment in her home state of Kansas was lessening. (The video is embedded on this page. Visit our video library for more videos.)

(Related: Melissa Etheridge says she doesn't want to “come off as being too gay.”)