Iso principle

Domain VIII · Creative & expressive arts therapies · Ira M. Altshuler · 1944 · Eloise Hospital, Michigan, USA

What it is

The iso principle is a technique principle: a rule for ordering and shaping music. It is not a stand-alone therapy, school or manual. Music therapists of many orientations use it inside receptive (listening), active and improvisational work. It also appears in music therapy method texts (Wigram,…

Format

• Phase A: Assessment of current state and goal (session 1, about 10–20 min within a session)
• Phase B: Music selection and sequencing (in the HSCT trial, 2 sessions of 50 min, one per direction)

Who practises it, and how they are trained or regulated

• Professional frame. In the US, "music therapy" is delivered by board-certified music therapists (MT-BC, through AMTA-approved training and the CBMT exam). In the UK it is delivered by HCPC-registered music therapists (BAMT is the professional body). The clinicians in the studies were board-certified music therapists.
• The principle itself is not a regulated technique. A psychotherapist can use mood-matched listening sequences and client-built playlists as an adjunct within their own competence.

Evidence status, as the guide reports it

• Typical dose. 4 × 50-minute individual sessions in the one randomised trial cited. Inpatient psychiatry uses single-session playlists facilitated by a music therapist, with pre/post ratings. The experimental minimum is two pieces of about 90 seconds each, but Starcke et al. suggest more pieces for…

Questions to explore with your client

• What drew you to it, and what are you hoping it will change?
• Is there physical contact? Was it explained beforehand, and do you feel free to say no or stop at any point?
• Does it involve any substance, plant preparation, remedy or supplement? Has your doctor or prescriber been told, especially about any medication you take?
• Does it involve intense or unusual breathing? Have you been told about the medical conditions for which that is not advised?
• Does it involve fasting, a special diet or 'detox'? Have you discussed this with your doctor?
• Who runs it, and what training or registration do they hold?
• What actually happens in a session or meeting, and how often?
• What does it cost, and is there pressure to commit to more?
• How do you feel afterwards, in the hours and days that follow?
• Does it fit with, or clash with, the work we do here?

What practitioners of it watch for

• clients who are too polite to criticise. Ask about specific transitions rather than asking "Is it OK?".
• pauses or a change of expression when a genre or era is mentioned. The music of a particular period of life can be a trigger in itself.
• In 125 routine pre/post pairs, mood ratings rose. There was no control group, so the design cannot show that the playlist caused the change.
• the client following your changes. If they resist, you are leading too fast. This needs musical skill and clinical training (see Section 1, Professional frame).
• strong emotion or memories surfacing during the matched opening (see Section 5, overwhelm). Note which track marks the turning point. It is useful for future editing.

When to involve someone else

• New or worsening physical symptoms, or advice to stop or change prescribed medication: involve the client's doctor or prescriber.
• Signs of coercion, isolation from family and friends, escalating costs or secrecy: discuss openly and consider safeguarding.
• A crisis or thoughts of suicide: follow your crisis protocol. In the US, call or text 988; in the UK and Ireland, Samaritans on 116 123.

Drawn automatically from the guide's own sections. Stay curious: neither endorse nor dismiss what the client values, and check anything that matters against the full guide and its sources. Not medical advice.