Aguilera and the doctors who performed the procedure appeared at a news conference Wednesday to announce the surgery had been successful.
"Two months ago I was on the operating table and now I have my life ahead of me, I have been brought back to life," The Local quoted Aguilera as saying during the conference.
The musician was grateful to the surgical team for ensuring his ability to play was unaffected.
"Without music I am nothing," Aguilera said.
Dr. Guillermo Ibanez, the neurosurgeon who led surgery, said the technique was the best way to ensure Aguilera's career as a musician was not endangered.
Anthony Kulkamp Dias, 33, who underwent brain surgery at Hospital Nossa Senhora da Conceicao in Tubarao, Brazil, earlier this year, was kept awake during the procedure and sang while playing his guitar.
Slovenian opera singer Ambroz Bajec-Lapajne serenaded his surgery team with Schubert's "Gute Nacht" while undergoing a similar procedure at University Medical Center Utrecht in the Netherlands.