Taylor Swift will be offering live video streams of two songs she’ll perform Saturday (May 21) at her “Speak Now … Help Now” charity concert at Nashville’s Bridgestone Arena. Originally scheduled as a dress rehearsal for the North American leg of her Speak Now World Tour, Swift decided to turn the Nashville concert into a public event to raise money for tornado victims. The video stream will include information on how to make a donation. All proceeds from the concert’s ticket sales will go directly to help victims via the Speak Now … Help Now fund established through the Community Foundation of Middle Tennessee. The live streaming begins at 9 p.m. CT at www.Taylorswift.com, Ustream.tv/taylorswift, Facebook.com/TaylorSwift and MySpace.com/TaylorSwift. She begins her tour May 27 in Omaha, Neb.