Colla Parte (subtitled Versioni per Violoncello Solo) is a solo album by the cellist Ernst Reijseger, recorded in 1997 and released on the Winter & Winter label.

[1][2] In her review for AllMusic, Joslyn Layne wrote: "Calm, meditative, and gorgeous, Colla Parte is a solo cello recording from Ernst Reijseger, a musician internationally recognized not only for technique, but for unmatched creativity and improvisatory skills.

Filled with beauty, this Winter & Winter release is highly recommended for all fans of string music in general, as well as for Reijseger fans specifically".

[3] In JazzTimes, Bill Shoemaker observed: "On this often sumptuous and occasionally wry solo program, Reijseger combines prodigious classical training, a dash of subversive wit, and an open-hearted, if idiosyncratic brio, to make Colla Parte a thoroughly engaging album from beginning to end.

Reijseger creates a seamless, cloistered calm from not just space-soaking pieces built upon devices perfected in previous centuries, but also borderline dadaist techniques and a wide range of materials".