While Macklemore and Ryan Lewis this week maintain their "Hold" atop the Billboard Hot 100 with "Can't Hold Us," there were a few notable changes on this week's charts. Zach Sobiech, who passed away last week after a battle with a rare, terminal form of cancer, makes his posthumous debut on the tally with "Clouds," which enters at No. 26.

The song has gained viral attention across the Web, following Soul Pancake's heartwarming video in which several actors and musicians expressed their admiration for the singer-songwriter. "Clouds" also starts at No. 7 on the Digital Songs chart with 156,000 downloads sold.

Daft Punk's "Get Lucky," featuring Pharrell Williams, also makes a noteworthy climb up six spots to No. 4 with 180,000 downloads. The duo's album, Random Access Memories, debuts at No. 1 this week with 339,000 copies sold.

Watch the video below for Sobiech's "Clouds."

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