At press time, industry sources suggested that of all her songs, "Rehab" sold the most during the week that ended Sunday night (July 24) -- a survey period that closed approximately 36 hours after news of her death broke -- with sales estimates for it around 30,000 downloads. That may be enough for the song to re-enter the Digital Songs chart. We'll know for sure on Wednesday when SoundScan's sales data is released.
Her next biggest sellers look to be "You Know I'm No Good" (around 15,000), "Back to Black" (over 10,000), "Valerie" (10,000) and "Tears Dry On Their Own" (possibly 5,000).
Combined, all of her available songs last week sold an estimated 100,000 downloads. If that number holds, it will represent a whopping 1,800% gain from what her songs sold the week previous: 5,000 according to SoundScan.
"Rehab" is her biggest U.S. hit, having climbed to No. 9 on the Billboard Hot 100 chart and earning the singer Grammys for record and song of the year, as well as best female pop vocal performance.
The video for "Rehab" also saw a major jump in plays on both YouTube and Vevo following the news of her passing. Since Saturday, the clip has clocked more than 4 million views on the video-sharing sites. That sum accounts for nearly half of its overall 8 million total views.
In the days leading up to her death, the artist's collected videos averaged 48,000 plays a day on VEVO. On Saturday July 5, she gained over 5.7 million plays, according to data-analyics firm Next Big Sound.
Radio airplay for "Rehab" has additionally surged. On Saturday it received 173 plays on 119 stations (of the more than 1,200 stations monitored for the Billboard Hot 100), according to Nielsen BDS. The spins translated to a one-day audience of 1.4 million, with pop, AC, alternative, triple A and R&B formats all playing the song.
How much was airplay up for "Rehab" Saturday? By comparison, on Friday, it had been played a mere five times on a total of five stations, a single-digit sum in line with its recent airplay.
After Saturday's spike, airplay for "Rehab" was back down sharply yesterday (although still significantly higher than before her death) to 38 plays on 30 stations, which amounted to 171,000 in audience.
The charts will continue to feel the impact of her passing next week - once a full week's worth of sales, radio airplay and streaming data have been registered.