"Good Bye" sees the singer becoming the second member of the K-pop girl group to land on the chart.

The women of MAMAMOO continue their banner year on the charts with another new accomplishment for one of its members.

MAMAMOO lead vocalist Whee In sees her latest solo single, the moving ballad "Good Bye," debut at No. 24 on Billboard's World Digital Song Sales chart for the week date Sept. 14, 2019. The song is the highest new entry on this week's tally.

While all the MAMAMOO members have released solo songs in various capacities, only two of them have managed to land on the World Digital Song Sales chart. Earlier this year in February, fellow vocalist Hwasa made a splash on the chart when her uptempo cut "Twit" hit No. 3. This year has been a particularly strong for MAMAMOO on the charts, as the group hit a new peak with "Gogobebe," when it soared to No. 2 in March, as well as two of its soloists entering the chart.

Whee In is now just the sixth female solo K-pop star to bow on World Digital Song Sales this year following her band mate Hwasa, along with Lee Sora, Park Bom, Sandara Park and Somi. Among all these women, Lee Sora, Park Bom and Sandara Park have the highest entries, in Lee Sora's "Song Request" featuring BTS' Suga and "Spring" performed by Park Bom and Sandara Park.

While ballads typically have a tougher time connecting to the international K-pop fandom, the popularity of MAMAMOO's members along with the music video's unexpected LGBTQ storyline likely all contributed to the song's ability to land on the chart and make Whee In the second member to enter the charts. Watch the visual, with a surprise ending, below: