Hal (stylized HΛL, replacing the Latin "A" with the Greek "Λ" or Lambda) is a Japanese pop band formed in 1996.
They have worked with several Japanese pop and rock stars and also have won two Japan Record Awards for their musical arrangements for singer Ayumi Hamasaki (with "Free & Easy" in 2002 and "No way to say" in 2003).
The sound of Hal is mainly a lively digital beat at the edge where the electric guitars are used a lot, as a special feature and typic in their arrangements.
Finally the singer Halna was chosen to be a part of Hal and they signed a deal with record label Avex Trax.
Both eventually signed deals with a music production comapany named "Blue Bird's Nest", which is a subsidiary of avex.