"To reveal musicians' true talents, put them on stage with only their instrument and see what they can do. Time an again, local guitarist Michael Gruber has proven his skill in just this way. Gruber pleasantly reminds us why our country is referred to as a melting pot - serving up a tasty lend of blues, folk and rock'n'roll."
— Kimberly Zabkowicz, Shepherd Express
“Gruber leaves no base uncovered: The songwriting, singing and musicianship are all strong, along with a dash of personality that is both whimsical and vulnerable."— Aaron Nathans, B-Side CD Reviews
“Yesterday is Make Believe is an enjoyable collection of songs that highlight Gruber’s best talents. The tracks run the gamut from easy swinging folk with R& B leanings, to pop songs in a band setting, to finger-style acoustic instrumentals. The emphasis is squarely on the acoustic guitar and Gruber’s rich baritone …”- Rick Tvedt, Rick’s Café