There are at least 10 artists named Halo.
1) Two piece sound-excreting entity based in Melbourne, Australia
2) North Carolina emcee HaLo aka Mr. Ben Ready from 9th Wonder‘s It’s A Wonderful World Music Group/Jamla Records
3) Slovenian rock band formed in 1996.
4) British Rock band of the 2000's.
5) German Rock band which formed in 04 or 05.
6) An early 90s collaboration between American producers Thomas Penton and Luis Duran.
7) A christian (hard)rock band.