"Licking Up the Modes" has shown itself once again! Finally moving onto Lydian!
Like the rest of the licking up the modes series, we'll be using C as our starting note so as to see the differences in each mode. (Parallel modes)
C Lydian is constructed as follows:
1 - C
2 - D
3 - E
#4 - F#
5 - G
6 - A
7 - B
It's good to note that when using Lydian there are no void tones. Every note can sound good as an extension to a Cmaj7 chord or as a landing note while soloing.
Also note that the #4 or "#11" is what we'd call the "Lydian" note. It's the note that sets it apart from the other modes. Including this note will have a nice effect when soloing or comping.