There are at least 2 artists:

(1) Speak Low (formerly Speak Low If You Speak Love) is the solo project of The Dry Leaf Project frontman and State Champs bassist Ryan Graham. He started the project in January, 2008.

(2) Speaklow is a jazz-funk & soul-jazz spanish hammond organ septet. Its leader, Julian Maeso, plays the organ. The other founding members are Antonio Pax (drums), Jose Funko (guitar) & Martin Garcia (tenor sax & horn section conductor). Sometimes credited as SpeakLOW. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.