So i think over the summer i want to learn a concerto.
Can anyone suggest anything along the lines of a 'first concerto'... something hard, but y'know, not deadly?

Taken from Mr. Moersch's "marimba syllabus and repetoire list" ( https://www.marimba.org/ja/modules/tinyd0/index.php?id=11)

Early Concerti

James Basta: Concerto for Marimba
Paul Creston: Concertino for Marimba
Robert Kurka: Concerto for Marimba
Darius Milhaud: Concerto for Marimba and Vibraphone
Jorge Sarmientos: Concerto for Marimba

Japanese Concerti

Keiko Abe: Prism Rhapsody
Akira Ifukube: Lauda Concertata
Minoru Miki: Concerto for Marimba
Akira Miyoshi: Concerto for Marimba
Toru Takemitsu: Gitimalya
Toshimitsu Tanaka: Marimba Concerto (Sadlo Concerto)
Takayoshi Yoshioka: Marimba Concerto No. 1 (ms)

European Concerti

Askel Masson: Marimba Concerto (ms)
Tilo Medek: Concerto for Marimba
Marta Ptaszynska: Concerto for Marimba
Werner Tharichen: Concerto for Marimba and Trombone
Jiri Valek: Concerto for Marimba
Nebojsa Zivkovic: Concerto for Marimba, Second Concerto for Marimba

Modern Concerti

Richard R. Bennett: Concerto for Marimba
Peter Klatzow: Concerto for Marimba, Concerto for Marimba and Flute
Libby Larsen: Marimba Concerto: After Hampton
Frank Nuyts: Woodnotes (ms)
Tomas Svoboda: Concerto for Marimba
Andrew Thomas: Loving Mad Tom
Alesandro Vi�o: Marimba Concerto (ms)