PianoMother.com: piano courses by Yoke Wong
Piano Mother is operated by Yoke Wong, a piano teacher and a church pianist committed to help people of all ages and levels to improve their playing.
Language Course: independent international booking agency
Language Course is an independent platform for languages classes worldwide which aim is to provide the right information to students.
Guitar-Online: courses & music software
Guitar-Online provides guitar lessons for beginners, intermediate and advanced levels. Its Marketplace has also piano, vocal lessons from popular coaches.
Singing Success 360: video lessons & complete program by Brett Manning
Singing Success 360 is a course for singers wishing to sing better. There is The Complete Method + 3 items for mastering mix, harmony and vibrato + videos.