Simplify the following text for a Grade 7 native English-speaking person.
Original: Top Heatseekers refers to either of two separate `` Breaking and Entering '' music charts issued weekly by Billboard Magazine : the Heatseekers Albums chart or the Heatseekers Songs chart . They were introduced by Billboard in 1993 with the purpose of highlighting the sales by new and developing musical recording artists .
Simplified: Top Heatseekers is a weekly music chart for albums introduced by Billboard in 1993 .