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Sospiro Strings

Kontakt Instrument by Ben Osterhouse

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Sospiro Strings is a Kontakt library for creating slow, emotive strings. It features 4 different length swells and 3 sustained articulations, recorded on bass, cello, viola, and violin.


There are separate .nki's for each individual instrument, and there is a .nki with all instruments mixed together, to work as a simpler sketching tool, and also to save memory.
There are 2 varieties of Swells:

  • The vibrato swells provide a warm, individual sound. The vibrato samples sound better or worse depending on how much they are being timed-stretched, which is why it is especially nice to have non-vibrato as an option. All of the swells were originally recorded at 110 BPM
  • The non-vibrato swells have a clear tone which especially brings attention to the change in tone as each instrument louder and softer.

Each version, vibrato and non-vibrato have a single velocity layer. 

Using the Length in Beats slider, you can choose the appropriate length, and the corresponding swell will be chosen and time-stretched if needed.

The Length Multiplier is useful if you have a project with a fast bpm and you want it to sound slow, or vice versa.

The Smart Release feature makes it so that however far into the crescendo-ing part of the sample you have held the note, it will jump that far from the end of the swell. This means that the longer you hold a note, the longer its release will be.

All of the swells can be either vibrato or non-vibrato. The vibrato adds warmth and individuality to the sound but may be a bit overdramatic in some cases. The non-vibrato has a lot of clarity, and especially brings attention to change in tone as each instrument gets louder and softer. The vibrato samples sound better or worse depending on how much they are being timed-stretched, which is why it is especially nice to have non-vibrato as an option.

The Sync feature is one of the most essential features: with Sync enabled, any notes you add or change in a chord will sync with the first note that was played.

There are 3 varieties of Sustains:

  • The cold sustains are played with a slow bow and no vibrato --a fragile sound at the edge of breaking.
  • The warm sustains are played over the fingerboard with a fast, freely changing bow and generous vibrato.
  • The full sustains are played closer to the bridge with a slow, heavy bow. Vibrato is used with discretion.

There is an option to double the sound, which layers two instances together and pans them slightly apart. This sounds better if you are only using one instrument by itself and only playing a few notes at a time. If you are playing big chords and layering all 4 instruments together, the doubled feature tends to sound more generic and uninteresting.

System Requirements

  • 3.2GB available HD space
  • Kontakt Full Version 5.8.1 or later
  • This instrument will not work in Kontakt Player

Any references to any brands on this site/page, including reference to brands and instruments, are provided for description purposes only. For example references to instrument brands are provided to describe the sound of the instrument and/or the instrument used in the sample. Plugin Boutique do not have (nor do they claim) any association with or endorsement by these brands. Any goodwill attached to those brands rest with the brand owner. Plugin Boutique or its Suppliers do not accept any liability in relation to the content of the product or the accuracy of the description. "RHODES" is a registered trademark of Joseph A Brandstetter.