In the studio the "Three Jerks" and session players made records, and for concerts the road band, which included Garcia and Avila, performed. Estefan was the common denominator. Extensive tours, concerts in 40,000-seat stadiums, and music videos on MTV and VH-1 made the Miami Sound Machine a leading U.S. band. Estefan gradually became the star attraction, and the act came to be billed as Gloria Estefan and the Miami Sound Machine or sometimes simply Gloria Estefan. Some commentators on the popular music scene called Estefan a demure, Hispanic version of Madonna. After the Let It Loose album, Galdo and friends quit working with the Miami Sound Machine, so the band was on its own creatively. Early in its evolution, the band's biggest hits were rousing dance numbers, but by the end of the 1980s it was Estefan's ballads that engendered its success. From the Let It Loose album the singles "Rhythm Is Gonna Get You," "Betcha Say That," and "1-2-3" made it to Billboard's Top 10 list, but it was the ballad "Anything For You" that topped the charts. Despite the group's popularity with English-speaking listeners, the Estefans have not forgotten their roots. There are always Spanish-language projects in the works, and the title of their 1989 album Cuts Both Ways attests to their intention to live up to their international reputation. Estefan contributed to Cuts Both Ways in more capacities than as just the lead singer. She was involved in its planning and production, composed some of the music, and wrote lyrics to most of the songs. The rollicking salsa finale "Oye Mi Canto" ("Hear My Song") rivaled "Conga" for its appeal. Emilio Estefan relinquished his position as keyboardist with the Miami Sound Machine after the birth of son, Nayib. He then devoted his considerable energy and managerial talent to promoting the band and the other enterprises that were to eventually make the Estefans producers of their own and others' records. While Estefan toured with the band, her husband ensured that Nayib would have at least one parent at home. A close family, the Estefans would arrange to meet as often as possible during tours. While traveling together on March 20, 1990, the band's bus was involved in an accident with a tractor-trailer on snowy Interstate 380 near the Pocono Mountains of Pennsylvania. While Nayib suffered a fractured shoulder and Emilio received minor head and hand injuries, Gloria suffered a broken vertebra in her back. In a four-hour operation several days later, surgeons realigned Estefan's spine and implanted steel rods to buttress the fracture.