Tower of Power today remains constantly in demand, having recorded with hundreds of artists as diverse as Aerosmith, Elton John, Little Feat, Phish, Santana, Heart and many others. The TOP horns — still including Castillo and Kupka — are considered one of the best front lines in the world. In addition, the group features original bassist Francis “Rocco” Prestia. TOP has also nurtured some of the most beloved and talented vocalists of the past five decades.
Tower celebrated their 40th anniversary in 2008 at a very special reunion show at the Fillmore Auditorium in San Francisco. In addition to the 10 current members of the band, another 20 musicians and vocalists that at one time held a position with the band appeared with them. The show was filmed and is available on DVD. Each year Tower of Power tours the United States, Japan and Europe, playing to sold out crowds worldwide.