American vocalist and performer Whitney Houston, nicknamed “The Voice”, embarked on 10 concert tours, 6 of which were world tours and 4 which were territorial tours. After becoming the opening act for singer Jeffrey Osborne and Luther Vandross on their US amphitheatre tour and playing at various American theaters, festivals, and clubs in 1985, she embarked on her first worldwide tour, the successful The Greatest Love Tour in 1986. With promoting worldwide mega hit album Whitney, her second world tour, The Moment of Truth World Tour started in North America during the summer of 1987 and continued overseas during 1988 in Europe, Japan, Hong Kong, and Australia. Especially in Europe, Houston visited 12 countries, playing to over half a million fans including nine consecutive nights at Wembley