Who's Lani Hall??? Well, let's just say she was well-connected, and it got her some good jobs. Here's what it says about her in the All-Music Guide:

The original voice of Sergio Mendes' Brasil '66, singer Lani Hall was also the wife of trumpeter and A&M Records co-founder Herb Alpert. Upon exiting Brasil '66, she made her solo debut in 1974 with the LP Sundown Lady; a series of releases including 1975's Hello It's Me, 1977's Sweetbird and 1979's Double or Nothing followed, but after appearing on the soundtrack to the 1983 James Bond film Never Say Never Again Hall largely disappeared from the recording scene, resurfacing only to make the occasional cameo appearance on her husband's recordings. However, the rise of Latin pop during the 1990s inspired Hall to return to the studio, and in 1998 she issued Brasil Nativo.

Actually, she did have a good voice - but it's unlikely she would have gone as far as she did without Herb Alpert. Alpert was best-known as leader of the Tijuana Brass, but he probably made more money from A&M. More information about Alpert in the All-Music guide.
-Joe Offer-