The unfortunate and all-too-common scheduling conflict will prevent Aerosmith's Steven Tyler from appearing at the ASCAP "I Create Music" Expo (the singer was announced as a keynote interview and honoree back in January) on April 18.
Instead, the rocker has committed to take part in "the first naked chat room on Google+ Hangout," he announced on April 5 , adding, "Be there or be square, I don't want to hear you don't have anything to wear."
The online confab  will take place on Monday, April 8, at 6:30 p.m. PST / 9:30 p.m. EST, during which Tyler will be interviewed by entertainment journalist Roger Friedman -- no word yet on whether the Showbiz411 columnist is also planning to be in the buff.
Tyler will answer select questions tweeted to @ASCAPEXPO  and using the hashtag #AskSteven.
The reason for the cancelation: Aerosmith's Australian tour requires the band to arrive earlier. Said Tyler in a statement apologizing to Expo attendees: "Due to the lack of time travel, and the shuttle being mothballed, I can't make it in time to be with you."
Tyler and bandmate Joe Perry were also due to appear at the organization's Pop Music Awards on April 17 and receive the ASCAP Founders award.
Earlier Friday, the performance rights organization announced that Katy Perry has joined the Expo lineup . She'll be interviewed by ASCAP EVP of Membership, Randy Grimmet.