"Maroon Nebula" is an original composition by Arcoiris Sandoval from her 2018 album First Voyage. Performed in F minor at approximately 226 beats per minute with a waltz feel, this track brings a three-quarter time dimension to the album's otherwise predominantly 4/4 program. The waltz meter lends the music a sweeping, expansive quality that suits the cosmic imagery of the title. Sandoval's piano solo opens the improvised section, and her playing makes inventive use of the waltz's rhythmic possibilities, sometimes floating over the 3/4 pulse and at other times digging into its natural accents. Bassist Marty Kenney follows with a solo that demonstrates the melodic potential of the acoustic bass in waltz time, where the wider spacing between downbeats allows for longer, more lyrical phrases. Drummer Allan Mednard closes the solo section, navigating the waltz feel with dynamic variety and rhythmic sophistication. The three-soloist format gives each member of the trio equal billing, reinforcing the group's collaborative ethos. "Maroon Nebula" reflects Sandoval's interest in evoking imagery and atmosphere through her compositions, and the waltz setting provides a distinctive rhythmic character that sets this track apart within the album's varied program.
