Meghan Trainor Remains At No. 1 (Billboard Hot 100)

Meghan Trainor has gone multiplatinum, selling over 3 million copies. Her song, "Bass" has held the No. 1 spot on Billboard's Hot 100 for 5 weeks in a row. At only 20 years old, Trainor was an IAMA winner in 2010 (winner of IAMA Best Female Artist). She now joins a rare group of music artists to hit Billboard's No. 1 before the age of 21: Michael Jackson, Stevie Wonder, Miley Cyrus and Lorde. Hear "Bass" below. For more on the IAMA, visit http://www.inacoustic.com.