bass and Oscar Castro-Neves took on guitar. These changes gave the group a more orchestral sound than before. In the early 1970s, lead singer Hall pursued a solo career and became Alpert's second wife. Some accounts claim that Mendes was upset with Alpert for years for "stealing" Hall away from his group. Though his early singles with Brasil '66 (most notably "Mas que Nada") met with some success, Mendes really burst into mainstream prominence when he performed the Oscar-nominated "The Look of Love" on the Academy Awards telecast in April 1968. Brasil '66's version of the song quickly shot into the top 10, peaking at No. 4 and eclipsing Dusty Springfield's version from the soundtrack of the movie Casino Royale. Mendes spent the rest of 1968 enjoying consecutive top 10 and top 20 hits with his follow-up singles "The Fool on the Hill" and "Scarborough Fair". From 1968 on, Mendes was arguably the biggest Brazilian star in the world and enjoyed immense popularity worldwide, performing in venues as varied as stadium arenas and the White House, where he gave concerts for presidents Lyndon B. Johnson and Richard Nixon. The Brasil '66 group appeared at the World Expo in Osaka, Japan in June 1970. Middle career Mendes' career in the U.S. stalled in the mid-1970s, but he remained popular in South America and Japan. His two albums with Bell Records in 1973 and 1974 followed by several for Elektra from 1975 on such as "Brasil '88", found Mendes continuing to mine the best in American pop music and post-Bossa writers of his native Brazil, while forging new directions in soul with collaborators like Stevie Wonder, who wrote Mendes' R&B-inflected minor hit "The Real Thing". In 1983, he rejoined Alpert's A&M records and enjoyed success with a self-titled album and several follow-up albums, all of which received considerable adult contemporary airplay with charting singles. "Never Gonna Let You Go", featuring vocals by Joe Pizzulo and Leeza Miller, equalled the success of his 1968 single "The Look of Love" by reaching No. 4 on the Billboard Hot 100 chart; it also spent four weeks atop the Billboard adult contemporary chart. In 1984, he recorded the Confetti album, which had the hit songs "Olympia", which was also used as a theme song for the Olympic Games that year, and "Alibis" which reached #5 on the A/C chart and #29 on the Hot 100. The