Watch the Lydian online guitar lesson by Chris Buono from Modes That Matter

11 as is the case in the Bbmaj7#11 chord heard in this segment that is set to a Jazz-Fusion vibe. What’s more, you may see the #4 show up in other chords in the progression, but as a different chord tone against the respective root. Such is the case in the second chord, Gm13add4, where the 13th is an E. That E against the overall Bb key signature is a #4. This gives the Gm13add4 a bite similar to the Bbmaj7#11 that is a perfect bed of positive tension to play Lydian over horizontally.