Boom!, according to press notes, "celebrates the soundtrack of these sisters' childhood with unforgettable songs from the 60s and 70s." Expect songs made famous by Joni Mitchell, Carole King, Carly Simon, The Beatles, Paul Simon, Jimmy Webb and Stevie Wonder. The sisters recently debuted a two-act version of their show June 4 at Manhattan's Town Hall.

Current tour dates follow:

Aug. 28 in Westhampton, NY; www.whbpac.org
Sept. 11 in Schaumberg, IL; www.prairiecenter.org
Sept. 25 in Lewisburg, PA; www.bucknell.edu
Oct. 1 in Pittsburgh, PA; www.mcgjazz.org
Oct. 8 in North Bethesda, MD; www.strathmore.org (this is a double bill with jazz great Dave Brubeck)
Jan. 21, 2011 in Cambridge, MA; www.ofa.fas.harvard.edu

To read Playbill.com's recent interviews with the singing sisters, click here. Not only a singer, Ann Hampton Callaway is also an acclaimed songwriter, whose works have been performed by Barbra Streisand, Patti LuPone and dozens of others. For her Broadway bow in Swing!, Callaway garnered a Tony nomination for Best Featured Actress in a Musical, and her many recordings include "Ann Hampton Callaway," "Bring Back Romance," "To Ella with Love" and "After Ours." Callaway is also a recipient of 14 Manhattan Association of Cabarets and Clubs (MAC) Awards.

Liz Callaway, most recently on Broadway in The Look of Love, made her Broadway debut in the original cast of Stephen Sondheim's Merrily We Roll Along, and she also took part in the anniversary concert of that musical. For her work in the musical Baby, she received a Tony Award nomination for Best Featured Actress in a Musical, and her other Broadway credits include The Three Musketeers, Miss Saigon and Cats. Callaway's solo recordings include "Passage of Time," "The Beat Goes On," "Anywhere I Wander—Liz Callaway Sings Frank Loesser" and "The Story Goes On."