The Eraserheads, Eraserheads, or E-Heads was a prominent Pinoy rock band of the 1990s, formed by Ely Buendia, Raimund Marasigan, Buddy Zabala and Marcus Adoro. The band is one of the most successful, critically-acclaimed, and significant bands in the history of Original Pinoy Music, earning them the accolade, "The Beatles of the Philippines." The Eraserheads are also credited for spearheading a second wave of Manila band invasions, paving the way for a host of Philippine alternative rock bands such as Rivermaya, The Youth, Teeth, Parokya ni Edgar and Yano.
The Eraserheads went onstage for their reunion concert on August 30, 2008 at the Fort Open Field, Taguig City. The concert, however, was cut short after Ely Buendia experienced chest pains due to emotional and physical stress. They were already halfway of a planned 30-song setlist as Buendia was rushed to the Makati Medical Hospital because he was experiencing chest pains right after playing their 15th song (last song for the first set). He was, however, reported to be in stable condition. Buddy Zabala had checked on Ely in his tent right after they went to their planned 20 minute break and saw that he already was on an oxygen mask with paramedics checking his blood pressure. As he left and came back, paramedics were already taking Ely on an ambulance. Bandmates Buddy, Raimund and Marcus Adoro further said that they had no idea that Ely was already having difficulty performing. In the spirit of the reunion, Raimund, Buddy and Marcus went to Saguijo after the concert and they continued their sets there. Kris Gorra-Dancel, Ebe Dancel, Aia De Leon and many other OPM artists joined them as well.
MTV Philippines President Francis Lumen stated: “He had a slight attack because of stress due to the recent passing of his mother (Lisette Buendia), and their sound check which lasted till 3 a.m. today (Saturday).” Buendia's mother died of cardiac arrest on August 28 after recovering from surgery to treat her intestinal cancer. Buendia was transferred to Philippine Heart Center 10:00 p.m. of August 31 after being treated at the critical care area of the Makati Medical Center emergency room. Sony BMG reported Buendia was "stable" after suffering hypokalemia a medical condition in which the concentration of potassium in the blood is low. Buendia had been administered with a potassium intravenous fluid.
Buendia, 37, on September 1, 2008, underwent his third heart angioplasty surgery since his January, 2007 heart attack. The blood vessel operated upon was "100 percent fully restored," and Buendia was recovering in "stable condition but still under observation."