Glucose Tolerance Test (GTT). GTT is an abbreviation for Glucose Tolerance Test, which is a measure of the amount of glucose present in the blood stream of a person at the time the test is taken. This test is usually done to check for glucose related problems like hyperglycemia or hypoglycemia in the patient.
Contemporary R&B, also known as simply R&B, is a music genre that combines elements of rhythm and blues, soul, funk, pop, hip hop and dance.
Rhythm and Blues Music: Overview. and blues (R&B), which combines soulful singing and a strong backbeat, was the most popular music created by and for African Americans between the end of World War II (1941-45) and the early 1960s. Such Georgia artists as Ray Charles, Little Richard, and James Brown rank among the most influential and innovative R&B performers.